At the moment ,I have only one Ten Gauge ,it is an early Hammerless D Grade ,#3 Frame with The Dog Pointing engraved on the Bottom of the receiver also has the Heavier Ball Grip more often found on the Hammer Guns ,Pretty High Condition with 32" 10 Gauge Barrels and the Letter states sent back for a set of 30" ,12 Gauge Barrels and Forend , don't recall exactly but I think the letter states around 1918 ,they are Damascus Barrels also !

The Parker Story tells the story on barrel lengths and numbers of manufacture for each grade and gauge. The "totals" are extrapolated to somehow include the missing order and stock books. There is some great information there.

Found the table in the back for "short barreled guns" but so far haven't found one for the extra long barrels or a breakdown or percentage on the more standard lengths .