Shoot it, then you will know how to answer that question.
Your Mountain Stalker .50 Rifle was made in Spain for Connecticut Valley Arms. These are lightweight, synthetic stocked traditional muzzle loaders. They sold at dept stores for about $115.
100-1000 USD depending on specifics
No published sn data.
50-350
a standard cva 50 cal will run you about 100 if you find the right dealer. i got mine for 65 at a flea market
hartford, connecticut
I think you mean "Rift" valley and it is in Africa.
rifle
Military rifle made in Spain
what
Modern rifle, made within past 30 yrs or so. There should be a two letter code in a hollow square on the barrel. IF you can find that and repost, we can usually tell the year of manufacture.
Most of the early work was done in New Haven, Connecticut