[Runscott]

Originally Posted by D. Bergin

When I said "standard", it was because I was concerned it was a slightly trimmed down modern 16x20 print, not that it didn't fit some standard 1870's-80's era size.

It would be unusual for any albumen print to measure that close to a modern size, especially when you get to the larger sizes (8x10, 8 1/2" x 11", 11x17, 16x20), they are usually more erratic then that.

With the pictures given, I don't think you can tell enything given the frame it's in, but I'd be suspicious of anybody who offered me a 16x20 / 20x16 albumen photo.

I own a few. Nothing odd about the size of this one.