Hello, Just picked up an old p bass with a 12- 1952 body and a 12-1954 neck. The body is signed by Eddie, and the neck by Tadeo Gomez. The pots are mid 1952, and I am confident the pieces are original, and the bass is completely playable. On the neck on the lower left side of the heel and above the TG initial, there are two numbers stamped in light blue ink, they are 4 and 2. At first glance I thought it had to do with 1952 and 1954. But after reading that there had been some refits along the way, I thought I would ask if anyone had some insights on these numbers. There are no D marks on the body or the neck. It is a mystery. I would appreciate any thoughts on this.