I have one from 1977. Still plays great as people have said who borrow it on occasion when their stick is unavailable. It is my understanding when I bought mine, Helmstetter made one a month for awhile and each was one of a kind for that month. For info, at that time I paid $275 for it.
Dick Cady, Fast Eddy's, Capitola, Ca.
P.S. Forgot to mention your avatar. If that is your dog he looks just like my precious Suki, who unfortunately is going through some hard times now, with hip displasia, a terrible infaction on her side and during treating that she now has an enlarged heart. She is 12 so I should not complain, she has about 6 months left, hopefully.
They could pass as twins but that is typical of a lot of Shepherds.