Hi Cdavid,
Wow! certainly a lot of work! I figure that cabinet to be a 73' based on catalog pictures ( and my own) 73" cab. sure wish there were more of these to be found on our shores! Most of the Orange stuff seems to be in the U.S. midwest and east coast. got Mine from Canada through a crazy auction! seems like the younger bassists, simply didn't know what it was! so there were no bids on ebay! I contacted the seller and swung a deal for the original starting bid price. wish i coiuld find just one more 1973 bouncer here in the u.s. they are NOT popular, as they are (to my thinking And ear) just strictly a Low end cabinet. so. definitely a dissapointment as a single cab for bassists. Perfect... for "Rickenbacker guy's like me" who wish to run stereo, and this....for the low end.
Brent