high serial number Springfield M1 Rifle

[Joe W]

Robert, I guess these are the 4 known 6.1 SA's in 2007 less the bare receiver.
6100202, 6100256, 6100297, 6100499 ( purchased from DCM by Roger Miner in 1958)

According to the 2007 article by Bob Seijas the rifle you saw (6100256) was purchased at the Ohio Gun Collectors show, sometime in the 1980's, by Chuck Clawson.