What you have is a photo lathe engraving made of a black and white photograph. Here's how it was made: Photo was secured on a metal drum holder that when turned on would turn in a circle clockwise. Attached to an arm on the lathe (similar to a wood lathe where a block of wood would turn and the arm would hold a tool to cut the wood). However, in this case, the arm held a camera lens device that focused on the black and white tones on the photograph. As the drum was turning, instead of a metal tool cutting, a sharpened bamboo stylist was attached to an arm device that resting on a piece of plastic (also on a durm). As the photo head read the degrees of white and black shades, it would send a message to the stylist that would either make lines or dots into the plastic depending on what settings were selected. Some newspapers (for speed) just made line prints, but this one is a series of dots engraving that takes more time, but the results are a more realistic look when the print block was used in the printing process. I operated a photo lathe during the early 1950s, and this process was cheaper to produce a local photo than sending it to an engraving shop that made a negative by burning the image with an electric arc light to expose the screened negative on a piece of metal that was coated with a photo emulsion. The metal was dipped in an acid bath where all the dots were left exposed and the rest of the coat eaten away by the acid. After processing, the metal was attached to a block of wood that was type-high so it would be locked in a printing chase for printing. You could print from the block if you found a printer with a proof, flat-bed press who could ink the cut and pull a slick on enamel stock. It might take several tries before you got the ink just right, but it's possible. In my opinion, you can buy these type print blocks cheaply at flea markets, but is that image worth that much as a collectable? I don't think so, because the process can be duplicated today in many third-world countries for pennies. Hope this helps.