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I’m trying to figure out when the different Black fingers were made. I have one like this where the pots date to ’74: http://effectsfreak.com/media/product_photo/7b4804eac63d6d6b33b1a6e24bd23ad3.png
But I’ve seen other ones that look like this: http://www.effectsfreak.com/media/product_photo/4bce552f847d77e6a498007d9038475c.png
Does anyone know when the switchover was made?
They were built in the triangle-knob style (2nd pic) first, up until about 1973/74.
