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HD Postmark for San Diego Stamp Show 2026

San Diego Stamp Show 2026

Showing all 4 custom covers created for this cancellation event.

Size: C63402/20/2026 • Sequence #

A Century of Maritime and Natural Heritage (San Diego Stamp Show) - San Diego, CA

Front Design View

Front Design

Back Layout View

Back Design

Official Pictorial Postmark View

Canceled with Pictorial Postmark

A Century of Maritime and Natural Heritage

This commemorative cachet celebrates the enduring spirit of San Diego, a city defined by its deep-water harbor and diverse ecosystems. The skyline, anchored by the iconic naval presence of the USS Midway, serves as a testament to the region’s pivotal role in American maritime history since the early 20th century. Complementing this urban landscape is the California Condor, a symbol of the West’s rugged wilderness and a triumph of modern avian conservation.

This design honors the intersection of San Diego’s industrial progress and its commitment to preserving the natural world. From the historic waterfront to the soaring heights of the backcountry, San Diego remains a beacon of California’s vibrant, multi-layered history.

Philatelic Design Notes

  • Cachet Artwork: Features an elegant, vintage-framed illustration showcasing the modern San Diego waterfront skyline with the USS Midway museum docked in the harbor. Overlaid on the right side is a classic magnifying glass focusing on a vintage 20-cent USPS California Condor postage stamp. The lower banner section reads “CELEBRATING PHILATELY IN SD / FEB 20, 2026 / SAN DIEGO, CA 92101”. The space to the right displays an official seal of the City of San Diego along with a grey California state map silhouette marking San Diego with a red star.
  • Pictorial Postmark: A black ink pictorial cancel from San Diego, CA (ZIP code 92101) dated February 20, 2026. The postmark arches with the text “SAN DIEGO STAMP SHOW STATION” and depicts a central silhouette of a single palm tree over ocean wave lines.
  • Franking: Features a standard USPS U.S. Flag “Forever” stamp.
  • Production Credits: Cachet designed with the assistance of Gemini 2.5 Flash Image / Nano Banana and digitally edited using paint.net. Part of the Cachets for Pictorial Postmarks series by TSL (Bayamón, PR).

🔬 Design Lab & Process History

Explore the complete creative journey behind this postmark event: Gemini prompt logs, rejected asset iterations, and final composition layouts.

View Creation Log →
Size: C63402/20/2026 • Sequence #

A Legacy of the Sea and Sky (San Diego Stamp Show) - San Diego, CA

Front Design View

Front Design

Back Layout View

Back Design

Official Pictorial Postmark View

Canceled with Pictorial Postmark

A Legacy of the Sea and Sky

This commemorative cachet celebrates San Diego’s storied maritime history and its enduring role as a gateway to the Pacific. At the heart of the design is the Old Point Loma Lighthouse, which first lit the way for mariners in 1855 from its perch 422 feet above sea level. Standing alongside it is a majestic sailing vessel, a tribute to the legendary tall ships like the Star of India that have graced San Diego Bay for over a century.

These landmarks represent the city’s transition from a rugged frontier outpost to a world-class harbor. By weaving together symbols of early navigation and the timeless tradition of postal correspondence, this design honors the explorers and lighthouse keepers who shaped the “Birthplace of California.”

Philatelic Design Notes

  • Cachet Artwork: Designed to mimic an oversized vintage postage stamp with a perforated outer border, the central circle shows the Old Point Loma Lighthouse on a cliff overlooking a three-masted tall ship sailing at sea. The frame includes side ribbon accents featuring a roadside mailbox on the left and a sealed envelope on the right. The lower scroll reads “CELEBRATION / FEB 20, 2026 / SAN DIEGO, CA 92101”. The right-hand space displays the official seal of the City of San Diego along with a grey California state map silhouette marking San Diego with a red star.
  • Pictorial Postmark: A black ink pictorial cancel from San Diego, CA (ZIP code 92101) dated February 20, 2026. The postmark arches with the text “SAN DIEGO STAMP SHOW STATION” and depicts a central silhouette of a single palm tree over ocean wave lines.
  • Franking: Features a standard USPS U.S. Flag “Forever” stamp.
  • Production Credits: Cachet designed with the assistance of Gemini 2.5 Flash Image / Nano Banana and digitally edited using paint.net. Part of the Cachets for Pictorial Postmarks series by TSL (Bayamón, PR).

🔬 Design Lab & Process History

Explore the complete creative journey behind this postmark event: Gemini prompt logs, rejected asset iterations, and final composition layouts.

View Creation Log →
Size: C63402/20/2026 • Sequence #

The Spirit of the Golden State (San Diego Stamp Show) - San Diego, CA

Front Design View

Front Design

Back Layout View

Back Design

Official Pictorial Postmark View

Canceled with Pictorial Postmark

The Spirit of the Golden State

This vibrant commemorative design captures the essence of San Diego’s coastal identity and its enduring "California Dream." The crashing Pacific wave and radiant sunset symbolize the natural energy of the West Coast, while the California Poppy (Eschscholzia californica), the state flower since 1903, anchors the scene in local flora. In the distance, a classic sailing vessel honors the city’s deep maritime roots, dating back to the arrival of the first Spanish explorers in 1769.

This modern tribute also features a playful nod to the U.S. Postal Service, acknowledging the dedicated carriers who have connected the community through wind and wave for generations. Together, these elements celebrate San Diego as a place where historic tradition meets a bright, contemporary future.

Philatelic Design Notes

  • Cachet Artwork: Features a large, bold circular emblem containing a retro travel-style illustration of a huge curling ocean wave beneath an orange sunset sky. A historic galleon sails on the left, while a cluster of bright orange California poppies blooms in the lower left corner. Standing atop the central title ribbon is a whimsical, waving cartoon mail carrier carrying a shoulder satchel. The ribbon reads "STAMP SHOW STATION / SAN DIEGO, CA FEB 20, 2026 / CELEBRATING PHILATELY". The white space to the right displays a modern "The City of San Diego" logo along with a grey California state map silhouette marking San Diego with a red star.
  • Pictorial Postmark: A black ink pictorial cancel from San Diego, CA (ZIP code 92101) dated February 20, 2026. The postmark arches with the text "SAN DIEGO STAMP SHOW STATION" and depicts a central silhouette of a single palm tree over ocean wave lines.
  • Franking: Features a standard USPS U.S. Flag "Forever" stamp.
  • Production Credits: Cachet designed with the assistance of Gemini 2.5 Flash Image / Nano Banana and digitally edited using paint.net. Part of the Cachets for Pictorial Postmarks series by TSL (Bayamón, PR).

🔬 Design Lab & Process History

Explore the complete creative journey behind this postmark event: Gemini prompt logs, rejected asset iterations, and final composition layouts.

View Creation Log →
Size: C63402/20/2026 • Sequence #

A Legacy of the 1915 Exposition (San Diego Stamp Show) - San Diego, CA

Front Design View

Front Design

Back Layout View

Back Design

Official Pictorial Postmark View

Canceled with Pictorial Postmark

A Legacy of the 1915 Exposition

Established for the 1915 Panama-California Exposition, Balboa Park remains the cultural crown jewel of San Diego. This design celebrates two of its most enduring permanent landmarks.

The California Tower, designed by Bertram Goodhue, stands as a 200-foot icon of Spanish Colonial Revival architecture. Its intricate façade and tiled dome served as the grand gateway to the 1915 fair. Adjacent sits the Botanical Building, one of the world’s largest wood lath structures. Designed by Carleton Winslow, this "Lath Palace" was built to showcase the region’s lush horticulture and remains home to thousands of exotic plants.

Together with the iconic Lily Pond, these structures embody a century of San Diego’s architectural ambition and natural beauty.

Philatelic Design Notes

  • Cachet Artwork: Features a large circular emblem bordered by Southwestern-inspired geometric accents. The central illustration depicts a stylized, sunny view of Balboa Park, focusing on the Spanish Colonial Revival facade of the California Tower and the tiled dome of the Botanical Building reflecting beautifully into the Lily Pond. The baseline text block reads "BALBOA PARK / FEB 20, 2026 / SAN DIEGO, CA 92101". The white space to the right displays the modern "The City of San Diego" logo along with a grey California state map silhouette marking San Diego with a red star.
  • Pictorial Postmark: A black ink pictorial cancel from San Diego, CA (ZIP code 92101) dated February 20, 2026. The postmark arches with the text "SAN DIEGO STAMP SHOW STATION" and depicts a central silhouette of a single palm tree over ocean wave lines.
  • Franking: Features a standard USPS U.S. Flag "Forever" stamp.
  • Production Credits: Cachet designed with the assistance of Gemini 2.5 Flash Image / Nano Banana and digitally edited using paint.net. Part of the Cachets for Pictorial Postmarks series by TSL (Bayamón, PR).

🔬 Design Lab & Process History

Explore the complete creative journey behind this postmark event: Gemini prompt logs, rejected asset iterations, and final composition layouts.

View Creation Log →