With all original accoutrements and in 95% - 98% condition I'd say $1,000 - 1,150 is fair. IMHO the old ones are just better! Even though the M41 has remained
mostly the same over the years, they have cheapened the once solid Walnut Grips to Laminated Plywood style now, and the deep Roll Marks of yesteryear are now Laser Engraved I believe. The older style magazines are also thicker, more robust, more reliable and easily disassemble for cleaning if necessary. The 1972 vintage should also have a cocking indicator which while not essential is a really cool feature.
The Bluing on the new version is OK, but they do NOT have the deep blue finish the older ones do. S&W can no longer use the same Chemicals (due to environmental reasons - so they say) therefore the deep blue finish you use to be able to "crawl into" is gone on the newer ones.