Serial numbers ran from 536685 in 1948 to 826977 in 1976. SN 712954 was 1961 so maybe late 1950's to 1960 for yours.Model 30. 2 inch, Improved I frame, blued, S/N 68540X.
The special order number means it was packaged on the 267th day of 1997, which agrees with the serial number date.special order #7267, serial # CCF32**.
1982.ABJoo19
1970.serial number is 2K14***.
Gunbroker and Ebay are best for finding replacements.
There are folks on the S&W forum who could refinish your grips.
http://smith-wessonforum.com/
If you register and post the question for refinishing your grips they'll help you.
Jim