To help determine the manufacturing date of Hammond organs and Leslie speakers.
Use this form if you would like to submit your Hammond Organ for inclusion in these tables.
All available information must be taken as a whole, and, combined with some general tips and observations provided below, a narrow range of probable production years can be arrived at which in many cases will be accurate enough for most people's desires.
One thing to remember in this chronological quest is these instruments were built to be played, not (in most cases) to become museum pieces.
Some of the entries on the age list show actual known production dates and can be used as markers to guage the quality of other entries around them.
Earlier Leslie motors have a stamped four digit code.Even the above is fraught with some risk, as replacement parts used for repair or modification will occasionally skew the overall picture.Additionally, some organs have been pieced together in order to get one working unit out of many; this will produce inconsistent and unlikely date code ranges.To include a Leslie speaker or Hammond Tone Cabinet see the bottom of this page. Beginning in late 1935 and continuing to mid-1975, the archetypal instrument we think of when hearing the word "organ" was produced by the thousands.Please include an email address so I can contact you if I have a question. With a production history covering more than forty years, determining the exact manufacturing date of tonewheel Hammonds used to be difficult; new models were not introduced every year and production changes that were made were often subtle.