It has been a few years, but the Giants have produced a new series of black & white photo cards for their yearly Fan Fest events. This design showed up in 2023 and continued through 2025. Looks like these may be standard 2.5" x 3.5", rather than the taller format from previous years. Still blank backed, they feature a fairly modern design with a hint of the previous years elements.
So far, I've only spotted the following:
Hayden Birdson
Alex Cobb
Michael Conforto
Thairo Estrada
Luke Jackson
Bryce Johnson
J.P. Martinez
Sergio Romo
Taira Uematsu CO
David Villar
Matt Williams
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