The AH 10 looks like it has 4 blades? If I'm seeing it correctly, I thought, at least as a general rule, AH and BH had 6 blade. Wonder if new barrels were ordered. I have a AH made in early 1890s that was sent back to Parker in late 1890s to be fit with an extra set of barrels and the order specified 4 blade to be used. I guess it was a little cheaper and made no difference to buyer.
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