Hi, I just bought a four-digit serial number (81XX) Model 54 that has a (factory) stainless steel barrel. I know Winchester made 54's with stainless barrels, but did they make them that early in the production run? This serial number would have been from the beginning of 1927. I have read where stainless steel barrels were used on the 220 Swift guns. Mine is a 30-06. Thanks in advance for any help. J. Andy