Its stamped 377 3" from bottom of anvil. about 9" down from Trenton logo. I cannot move this on my own to see underneath. There is a square 1 1/2x 1 1/2" hole directly in middle of bottom. Anvil is 32" long, 16" tall and 5" wide at top. Base is 12 1/2" wide
I will post some photos soon