It is a Marlin Model 49, made for Western Auto.
No published sn data.
I believe that Marlin made their Model 49 rifle for Western Auto Stores using their Revealation brand.
The Revelation Model 150 is a Marlin model 49: See; http://www.e-gunparts.com/productschem.asp?chrMasterModel=082Zz49+RIFLE MARLIN 49 RIFLE Barrel, .22 Cal., 22", Used, Stamped Revelation 150
50-100 USD
If your Revelation 150 is a tube fed semi-auto .22 rifle, it was likely made for Western Auto by the Marlin Company, and is a Marlin Model 49. Depending on the part you need, you may find it at gunpartscorp website, or check with a gunsmith.
Kalishnikov
25-60 usd
Mossberg Model 353
I think Savage did. sorry it was not a savage. the revelation model 110 was a marlin model 81.
The Revelation Model 105 .22 caliber rifle was manufactured from 1971 to 1988. It was made by Marlin and marketed by Western Auto.
The Revelation model R125B in .22 Long Rifle was manufactured by the Savage Arms Company. It was sold under the Revelation brand, which was a label used by the Western Auto Supply Company for firearms and ammunition. The R125B is a bolt-action rifle known for its reliability and accuracy.
Proofhouse.com has a store brand chart that might help