I have 8 denoms. 25¢ thru $100 including a $20, all notched
They came out of Borlands sample box of chips He made them. Quick look, they are the only notched found in the box.
Spinetti got his sample box from Jerry Wall.
Don't know why they are notched. I have 120 different of his counterfeits.

Model T closed in the 70's long before Borland nmade the counterfeits.