Thanks for the quick replies. I made a mistake in posting the serial number. It is actually 75xxx. Added a non-existing 0 after the 75. Maybe this will narrow it down a little. Any help would again be greatly appreciated.
From the Standard Catalog of Smith and Wesson 3rd Edition " Serial number range begining 1954 starts at 1001 and continues to115000 tin 1970 ". 1960 is a good guess.