Originally Posted by jlhmnj

Hi Sue,

Can't say these irons are familiar to me either. According to Ismac's needle list, 20th Century was made by Mason. Mason did not make there own machines and were supplied mainly by White and eventually became a part of White.
There used to be an excellent White site on Webshots describing the relationship between White and Mason but it is gone with the reworking of Webshots to Smile.

Jon