Its a blacker hammer. Made in New York in 1928. Hammer head traverses the length of the anvil so you can work over the hardie holes, the edge of the anvil or the center of the anvil. The Anvil is a 500 pound fisher. I really like the hammer. Once i got it dialed in it has great control. You can adjust the force of the blow with treadle height adjustment. It also has a large clear space under the head so using traditional top tooling is no problem. Dies are easy to make, you just make a hardy tool. I made all the ones pictured on the tray. It hits with great force for its size, and really excels at driving drifts, punching holes etc. Only down side is it only runs 140 BPM so you have to use fullers for drawing out small parts, but its worth it to have the force of blows. I can work 2" easy enough, more with fullers etc, and that's saying something considering how large the die surface is. As close as you can get to the old method of forging with the smith and the striker by ones self.
Vid I made showing control after I fiddled with it some.