[Linked Image from photos.smugmug.com]

The SHOT 1 1/8 (or 1 1/4?) OZ MAXm indicates the original proof was 1896-1904
It was reproved 1954 - 1989 and the arrow is the date of proof code after sleeving. If VB that would be 1970 and was proved at 3 TONS which would be for a max. service load of about 9000 psi