Your Model of 1902 (or second model, first change) probably shipped in the 1904-05 period. Unfortunately, I don't have any SNs very close to yours listed to be more precise. The correct grips for that time would be black hard rubber. You might find a pair of originals on eBay, and there are numerous replicas available. If you don't care about having the original type, wooden and rubber round butt K-frame grips to fit it abound, both new and used.