Hi.
Welcome to the ALEMBIC club/forum . The cabinet looks like it is in very nice condition. I have cabinets for 4/ 15& 1/18 and 2/12 speakers from the same era loaded with JBL and GAUSS speakers.
I have noticed that the dimensions that you give of your cabinet are even smaller then my single 12 cabinets. It would be very helpful for you to measure the DIAMETER of the hole for the front mounted speaker opening. Yours might fit a 12speaker but only a diameter measurement will reveal this.
These original cabinets in the apparent condition that yours look to be in are not offered for sale very often. I would bid on it but I am located in Oakland ,Ca. and would not be ale not pick it up in person .I however wish you good luck with your transaction .
Wolf
(Message edited by sonicus on January 19, 2010)