Karsten began producing PING 3A putters in Redwood City, CA by June 10, 1959. PING still has a letter of that date that requests a 3A, but company records also show that the 3A was not popular at all when it was introduced. The remaining records from 1959 show that Karsten received orders for only three 3A's as opposed to 427 orders for the 1A (see And the Putter Went Ping p 47-49). Though production grew after Karsten moved to Arizona, the 3A putter still never approached the sales of the 1A.

This Ping Model 3A is marked with the Scottsdale address on the bottom of the head indicating that the clubhead was made in the early 1960s by Karsten in the garage of his home. However, the "line out" through the Scottsdale address with the Phoenix address stamped below it shows that it wasn't actually assembled and sold until after Karsten moved his operation to his new shop in Phoenix.

This example has its original shaft and black Golf Pride "Pro Only" grip, and original alignment channel on the top of the head.  

The 341/4" original shaft has Karsten's gooseneck double bend near the head. As can be seen in the images, there are two small chrome wear spots on the bend.

For more see And The Putter Went Ping chapter 2.