My 10 gauge (s/n 38598, ca. 1885) is almost identical to yours, and the table I'm using indicates yours was made later that same year. Mine's built on a #3 frame and the 32" barrels are stamped 5-14 (5 lbs, 14 oz). She's a big ol' gun, but they made them a lot bigger. What are all the extra numbers stamped on your frame underlug, as shown in this pic? I remember mine only having the 3, which indicates frame size.
By the way, you and Dean may get sick of talking Parkers if you hang around us very long!