My point exactly. One would expect that a grade 2 (G) would have two birds - and it does, and we might surmise that a grade 3 (D) would have three birds, a grade 4 (C) would have four birds, a grade 5 (B) would have five birds . . . but such is not the case -so we are left wondering what was the criteria that determined the number of birds engraved on the floorplates of the graded hammerless Parkers.
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