Dennis: It is a Crescent Model 2 made about 1898 and sold by Sears.
The barrels are Twist.
https://docs.google.com/document/pub...iu5JGIhfguSXXQ
Sears sold other Parker knock-off variants; some by Crescent and some from Belgium
The gun was not of high quality when new 120 years ago, and I would suggest cleaning the external surfaces and hanging it in a place of honor in your home.