First off, Welcome to the forum!, Second, we like pictures! Don't see too many of the older guns and a couple photos would go a long ways.
As you may be aware, the 38 Single Action 2nd Model was made from 1877 to 1891 with serials between 1 and 108255. Your serial falls roughly half way between the bunch, but nothing can truly be gained from knowing that. A letter from S&W would be worth the time and money {$50}