[drcy]

I'm sure when someone says 'silver print' they're referring to the standard black and white 'gelatin silver print' photo. Nothing special about it.

I noticed I never actually said that in the post.

If a random collector has a collection of 20th century baseball b & w photos, there's a good chance that 100% of the photos are gelatin silver.
If he owns a collection of 1800s baseball paper photos, there's a good chance 100% of them are albumen.

Platinum prints, carbon prints and salt print baseball photos are rare. Though cyanotypes (easily identified by their bright blue/cyan colors) are found with some regularity.