Nice find on the 733 Dave!
Not sure on the Pre-Sweetheart vises for color? I have a Sweethart that is black and orange and I believe its original.
Something I collected on the history:
Stanley bought the P.J. Leavens Co. of Vineland, New Jersey in 1911, and introduced two new lines of vises named Stanley "Jersey" and Victor "Jersey" to make use of the familiar Leavens' "Jersey" vise name. When Stanley made their big internal merger and introduced the Sweetheart logo in 1919, they also dropped the "Jersey" name and began casting the Stanely name in the side of their vises. A few years later they also added the model number to the side of the vise. By 1929 they started to pare down the number of vises they offered, and did the same in 1934, then again in 1939 (although they also introduced 3 new styles of vises in 1934 that were much cheaper to produce)
So 1911-1919, Victor & Jersey
1919/20 - to 1935 SW "Sweetheart"