That is right Dunster. The first 301 was made and sold in 1951 in commeneration of Singer's 100 year anniversary. It is the first slant needle built by Singer. The difference between 301 and 301A (as well as 401 and 401A) is only that the A was made in Anderson, SC. They 301 is really only worth about $75.00 but condition determines price.
Some people think they know it all and there is just no excuse for bad manners.