Like mtnboomer says, Savage was contracted to make No. 4's for the Brits at the beginning of W.W. II.(that'd be 1939, not 1941) When the contract was ended, all the existing rifles and parts were shipped to Canadian Arsenals, Longbranch Plant. That's now part of Mississauga, Ont. Literally across a wee river from Toronto's west end.
The Savage rifles are well made and $125 is a good price depending on condition. However, thousands have been assembled with no QC. Check the headspace and if it's ok, buy the rifle.