Re: Parkers Snow 1863 musket
Parker, Snow & Company of Meriden, Connecticut was a Civil War contractor for the Model 1861 U.S. Percussion Rifle-Musket. They made about 15,000 between 1863-64.
From the 8th Edition of Flayderman's Guide to Antique American Firearms....and their values (page 467):
"Parkers' Snow & Co. contract; made by Parker, Snow & Company, Meriden, Conn., c. 1863-64; total quantity 15,000. Lock marking of eagle motif above U.S., and PARKERS' SNOW & CO./MERIDEN, CONN., to right of hammer; date at rear of lock, 1864. A variant of this musket bearing the same markings but with an 1863 dated lock is believed to be the product of the James Mulholland contract of 1861, of which only 5,502 were delivered. Although definitive proof is not available, these 1863-dated specimens can bring a premium over the regular 1864-dated arms by this company.
Values-----Good $800 Fine-----$2,500"
As with any antique firearm, completeness, originality, and condition will determine the actual value......your gun should really be examined and evaluated "hands on" by an antique firearms expert.
If you want my guesstimate, from your description, and if all of the lettering is fairly sharp and legible, it sounds like this gun should fall in the "Very Good to Fine" area. Adding to that, the premium for an 1863 date, I would guess it would be valued from $2,000 to $3,000.....perhaps even a bit more.