Need information for the checkering pattern on the first version (c1920) beaver-tail used on the Ideal Grade. I am referring to the top photograph of BT in Brophy's, book page 151.
I understand from research this type BT was offered on a small quantity Ideal Grades prior to 1925. My gun dates 1920.
If you know this not be be correct, I would like to know that as well. Thanking you in advance.