Mine was made about 1936 or so ,I bought it in 1972 and started looking for collets soon after,if I knew then what I know now I would have just got a Good 6 jaw chuck. Any thing a collet chuck can do a 6 jaw can do and alot more,got an oddball sized part no problem the 6 jaw holds as tight ,does'nt crush thin tubing, and if you got an adjust true type your work can be made to run "0-0".I know that most people think that all collets run "0-0" all the time but that just is'nt true,even the good ones can only be really true with on size and round stock,if your material is under or over size then the collets can't hold it correctly and can't run "0-0".By the time you buy the chuck and a set of collets you could buy a 6 jaw adjust true and have more versatility.