firearm information

Question
I'd like information on a caliber 270W rifle made in England by Midland Gun Co. Ltd. Then it says Janna, Denver Co.
Also, a 12 gauge 2 3/4 in. It says New Haven Model 600K...made PY O.F. Mossberg and sons, New Haven Conn. USA

Answer
Midland Gun Co was know as a maker of Fine English Shotguns and Double rifles. They been out of business since 1965.
Janna was the importer. These firearms require an in person appraisal. Very few were imported into the USA. They can be collectable and valuable.

The New Haven 600 is the discount house plain verson of the Mossberg model 500 which is still made. The had fixed chokes
and no checkering. Its worth $150-75 depending on condition.
This are well made shotguns, but utility grade. The New Haven brand was dropped in early 1980s.
Marvick Arms brand name took its place.