How to find production year of your Hammond Organ
Classification Early Middle Later Latest Serial Number Plate Aluminum Plastic Plastic Paper Lock Round Round Large Large Pilot Light No Yes Yes Yes Logo HAMMOND HAMMOND Drawbar Knobs Plain Plain Engraved Engraved Wirings Cotton Braded Vinyl PCV PCV End Blocks Wooden Black Plastic Black Plastic Black Plastic Power Transfomer Big Silver Small Black Small Black Small Vibrato Line Box Silver, beneath the top board Behind U. Kbd Behind U. Kbd Behind U. Kbd Capacitors Wax Caps . Film Film Oil Lines Brass Pipes No No No Cabinet Walnut/Cherry Walnut Walnut Walnut Cabinet Durability Strong Standard Standard Weak Key Touch Shallow, Light Shallow, Light Deep, Heavy Deep, Heavy Tone Mild - Clear Clear Low Range Weak - Strong Strong
Correction requested. urbanmusic.com
The early B-3
Hammond Organ B-2