Well here is the verdict on serial number 76306:
"Parker shotgun, serial number 76306, was ordered by W.S. Brown in Pittsburgh, PA on October 18, 1892 and shipped on February 14, 1893. According to Parker Bros. Order Book No. 31 it was a CH hammerless, 12-gauge. It featured Bernard steel barrels with a length of 31 inches. Its stock configuration was a capped pistol grip. The chokes were patterned RH (165 #8 pellets in a 24" circle at 45 yards) and LH (190 #8 pellets in a 24" circle at 45 yards) The order specified engrave shield "ROX" and set trigger pull at 4 pounds. According to Parker Bros. Stock book No. 27, its specifications were: Length of pull: 14", Drop at Comb: 1 1/2", Drop at Heel: 2 1/2", Weight: 7 pounds and 12 ounces. The price was $150.00.
According to Order Book No. 36, the gun was returned on May 28, 1894 by W.S. Brown to lengthen chambers to 2 7/8 inches. The cost was $1.00. According to Order Book No. 89, the gun was returned on October 13, 1914 by Dr. F.M. Bittenbeuder in Bloomsburg, PA to take dents out of barrels and clean. The charge was $2.00. According to Order Book No. 89, the gun was returned on December 3, 1914 by Dr. F.M. Bittenbeuder to restock to 1/2 pistol grip (2 3/4" drop and 14 1/2" length of pull), checker panel and side of stock. The cost was $15.00 for the stock and $3.50 additional for the extra checkering."
Well there isnt anything about the shortened barrels to 27"

but I believe the stock is the one replaced in 1914 even if there isn't any mention of the lack of buttplate. I have not recieved the gun yet it is in the mail.
Does anyone have any information on the two previous owners listed above?