Bill, at first I wasn't sure what you were referring to as far as the 2 1/2 frame. It would have been clearer if Parker would have put the inches symbol in the order book (2 1/2") but they didn't. Frame sizes as stamped on the barrel lug were not in inches but could be converted to inches using the table found in the Serialization Book or the stock book. Parker used whole numbers for the frame size except in later years when the 1/2 frame was introduced.
Just one more piece of the Parker puzzle solved.
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