I have the speakers I grew up with in the 50's 60's.

You didn’t look too hard Janet???

Could be worth some bucks, judging by the 2nd last last link.



http://www.audioheritage.org/vbulletin/showthread.php?19058-Audio-Video-Receiver-for-Lansing-375-spe...

http://audiokarma.org/forums/index.php?threads/lansing-375-humpback-diaphragm-id-jbl.807618/

https://www.ebay.it/itm/171261570010?ViewItem=&item=171261570010

https://www.youtube.com/watch?v=NsCVV0JaJaA

Cheers George

thank you George. Am not an audiophile so when I could not find them listed on this site- thought I would ask.   I did see them on ebay about 4-5 years ago at 30K but was not ready to sell. i can not seem to open the picture from italian ebay but will keep trying-  and/or will try to post image here.
janet

i can not seem to open the picture from italian ebay

That's because it ended in 2014.

Cheers George 

makes sense, thanks

The 375 is a large compression driver that is normally attached to a horn.  They were the largest such driver made by JBL in the time period you are writing about.  They are highly sought after  are sought after.  They were used in a number of Iconic period speakers like the Hartsfield and the Paragon.  There should also be a woofer extended range driver present, unless they were removed etc.