Photos provided by Burnt Forge.
This is a nice little shop made hardie or jeweler’s anvil with a forged welded and hardened steel face. While it is a little rough it took more than hobbiest blacksmithing skills to make it. It has a very nice little square hardie hole passing throught both the hard face and body but no round punching hole as is typical in jeweler’s anvils.

The shank is about 3/4″ (19mm), the hard steel face about 1/4″ (6.3mm) thick and 1″ (24mm) wide. The small shank size indicates it either fit an old small anvil of 100 lbs (45gk) or less. Or perhaps it was made to fit a stand, swage block or a vise.

Dimensions
4-7/8″ (124mm) long
4″ (100mm) tall
1″ (25mm) wide