Identify this Parker Hammer

[Dylan Salvatore]

Hello everyone,
I am new to the forum and have something that I wanted to share with you. It is an older Parker made in 1890 by the serial number with external hammers. It is a 12 Gauge, frame size 1, and the barrels are marked "Stub Twist." It is fully functional with no damage other than use wear and patina, the bores are clean and barrels have not been cut down. I was wondering if anyone might be able to identify the Grade of the gun and any other information about it, as well as an approximate value or if it is desirable for a collector. Anything you guys can share would be greatly appreciated. See pictures of the gun below. If anything else, hopefully I gave a few people something interesting to look at.
Thanks to everyone.