I have 2 Scouts the 54cal is a case hardened with walnut stock and its 1:20.
The other is a 50cal. also case hardened ,walnut and its 1:38.
I called friends who also have Scouts in 54cal. all three are case hrdened and walnut and all are 1:20. I have yet to find a 1:48 , if I do i'll have to buy.
I'll try to post a photo of the 50cal.