Just type the phrase air rifles in bristol into any search engine - I found hundreds of possibilities using Google search and that exact phrase !
IIRC, a 22lR
Bargain brand.
Need a detailed description of all markings on all parts of the rifle.
Most likely a store brand. Proofhouse.com has a store brand chart that might help
In the days of Davy, rifles like his were built by individual gunmakers, and so did not have a brand name.
List all the markings that ARE on the rifle. sales@countrygunsmith.net
About $150
You can buy a Remington brand of riffle since it is better than most of the other riffles.
Like New In Box (LINB) It would be worth around ( $150 + )
Proofhouse.com has store brand chart
300 or so
800-1000 or so