My theory/gut feeling is that when BoWhoop was born it had typical AHFGCo. XE-Grade wood and the Jostam Hy-Gun pad as shown in this picture from the original Derrydale edition of Ole Miss.



The tip inlay was eventually lost from the original forearm as shown in this picture.



Then, at some point in the 1930s Nash had BoWhoop restocked, including a new forearm as shown in this picture.



This is the forearm the gun still has. Whether the original XE-Grade stock for BoWhoop was broken or Nash just wanted it restocked to match the very different pitch shown on the lower gun (likely 33050) in the Derrydale picture we'll never know for sure.