Type: Hammond A-102 (A-100 Series). US Model (117V).
Uses a converter to get from 220V / 50 Hz to the required 117V / 60 Hz.
- Fluted vibrato knob – 1962 and older
- Small Hammond script (very much faded) – 1935 – 1965
- Pilot lamp by the start switches – 1961 and later
- AO-28 transformer color black – from mid 1962 (silver up to mid-1962)
- Non-engraved drawbars. Engraved drawbars are used on organs built from 1969
The serial number, 22535, slots in between two other organs on the tonewheel general list that were both identified as 1963 production units.
Speaker serial AO-23232-0 18658 285315 shows a ‚3‘ for the last digit of the year. They are Rola speakers, produced in the 15th week of 1963.
The coding scheme for the speakers is XXXYWW where XXX is the company EIA code (Jensen = 220, Rola = 285, Heppner = 575), Y is the last digit of the production year, and WW is the production week. 285315 would be a Rola speaker made in the 15th week of 19×3 (you have to figure out which decade using other information).
Hammond used Heppner, Rola, Jensen, and Magnavox alnico speakers as tuned pairs. One speaker has a ribbed cone and is voiced for the low end of the organ’s tone spectrum and the other one has a smooth cone and carries the mid tones.
Color: Dark Cherry.
As far as I can tell everything is original, with basic maintenance done, like replacing the original power cord, and the addition of a Leslie kit (6122 with line out written on the added panel with the line-out and 6-pin Leslie 122 connector, labeled as ‘Leslie 428-13 Tremolo Control Terminal Box’, which is mounted inside the organ), half-moon switch (Chorale / Tremolo) and a switch to toggle between the internal speakers or the Leslie, or both. The Leslie socket had been rewired to accept a 220V power connection to power a Leslie set up to European specifications.
Here’s some more pictures from a few years back that was used in an advertisement to sell the organ locally in 2015.