Barber made some pretty androgynous looking Liberty's. Something is missing, but not too much. Wait for an expert.
Odd place to have been over polished to loose the details, so if it isn't a grease fill, then what is it? Hope someone will let us know.
The only reason I feel it's not grease filled is there are no signs in the design nearby that a the slightest bit weak. Any grease would have to have been confined and I find that very unlikely.
Out of curiosity, I checked out the guy's store. He has a couple of others with the same anomaly. I guess it's not as uncommon as I thought?