I've cleaned up two saws out of the batch that I bought. A Disston D-23 (1940's) and a backsaw that only has "Warranted Superior" on the medallion but no other markings, so it's hard to tell how old it is.
I really like the handle on the backsaw. Seems like a nice hard wood and the grip portion is still very smooth.
Here's the puzzle that I thought maybe some of you could help me figure out. The blade on the backsaw has a whole lot of vertical dents in it as if someone had been hitting it with a wide screwdriver or chisel. All of the marks are vertical and the majority of them are on the left side of the blade.
Here are some pics: