I asked 6 veteran CW-era arms collectors tonite at the Maryland Arms Collector's Ass'n monthly meeting. The most frequent guess was that W.O.G. is the initials of a collector who had the arms in his collection. Back say in the 1950's, collectors were not as touchy about original condition, and some would not worry about the effect on value of stamping their initials in the stock.
A couple of them mentioned something about a stock inspector, they were just brainstorming I think.
The collector initials thing is suported somewhat by the two Julia auction pieces having come from the same collection, and thus possibly having before that come from Mr. W.O.G.'s collection.
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