Manufacturers like H.P. Snyder Manufacturing Co. commonly used letters to designate the year. Some members have reverse engineered a list from 1936 when a so-called one-year-only feature was observed, or no-sooner-than features, or no-later-than features, and other examples believed to be accurately dated.How do you know that the “T” represents 1932? please explain, and again thank you for the continued information!!
Members use a pencil and paper or just their fingers and count the years with the letters, forwards or backwards.
For Snyder's older factory in Little Falls NY, letters from the later part of the alphabet were used: 1936–X; 1935–W; 1934–V; 1933–U; 1932–T; 1931–S; 1930–R; or 1937–Y; 1938–Z, etc.. The method becomes less reliable when letters might be skipped; but if we see examples we can confirm that a letter was not skipped.
Manufacturers did skip letters, sometimes.
Nothing is certain, but we may assign some measure of likelihood; (in your case you also have the hub with a date stamp?).