Greeners higher grade guns often had horn inlays in the stock. The missing diamond in the stock of your gun is not typical of Greeners inlay style.
The gun appears to be similar to their Unique model, grade 35 or 45.[A medium plus quality gun] Greener guns almost always have their grade code engraved on the trigger guard and in some cases also on the fore end iron. If you can provide the serial number it should be possible to establish the date of manufacture and its exact grade.
Will be interested to learn of Keiths evaluation of the gun.
