We have almost 20 of these blocks that my wife bought years ago at a garage sale. They are all similar (though not identical) in size at about 2"x2". They appear to be made out of a hardwood base with an etched metal (copper?) print face. The metal face is nailed to the wood block beneath it. I love the detail in these old blocks. I tried to research them but couldn't find much. I'm guessing these date back to the '40s, and they all appear to be advertisements for an electrical motor repair company. They represent a photographic challenge: To capture the beautiful detail, and because they are made as a mirror image so they print correctly, I need to flip them around so you could read them. Hope you like them!
Linking over to Macro Monday. Please click the link
to see great macro photos. Have a great week!!