The average going price for an excellent no box 3" 66 of most vintages is in the $850.00. I just saw one sell on GunBroker with box and paperwork for almost $1100. Since yours also has a documented factory simulated ivory grip you didn't get a bargain at a grande but you won't loose anything when you sell it either.

This is the first one I have ever seen that has those grips on it and product code documents such...

GREAT FIND!...now go find a gun for mom....Bob