http://www.audioheritage.org/vbulletin/showpost.php?p=2246
http://www.lansingheritage.org/html/jbl/jbl.htm
http://www.lansingheritage.org/html/jbl/reference/price-lists/price-lists.htm
The current rage seems to be for 4345's and 4355's and it's a world wide phenomenon.
Here's the...