I have a similar one - It's a Premier bought new in about the middle 60's for £9.19/6. I machined and fitted the longer barrel and made new grips in the middle 70's. I recently re-discovered this, along with a BSA Merlin underlever rifle, when I cleaned out my dads shed, they have been laying there for 40 years and unfortunately now in poor condition.


I can't really remember what the barrel started life as but at about the time I bought a job lot of Baikal junior break barrel rifles and fitted them with aperture sights for a scout troop, so could well be one of those, they were really very accurate for a cheap rifle.