Know anything about this Rola Speaker?

[The_Tallman]

I got this Rola driver at a flea market for 3 bucks just because it was so cheap and when I pushed down the cone, it went up and down smoothly thereby indicating it has not been overheated. The speaker pictured on the closed ebay auction posted below is the big black one, and not the smaller alnico driver. It seems to say its a G12 model - which is kind of weird cause I thought that was the model number of a british greenback. BTW, the stamped number on my driver is 285344, and it looks identical except there is is no labeling on the back of my driver.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=50593&item=3735105588&rd=1

 

[Farview]

I know that (very) early Marshals used rola speakers, and I'm pretty sure that rola turned into celestion. If it was out of a marshal cab it was a 25 watt speaker