Celestion Greenback g12c Quad 16ohm

For sale is a quad of Celestion G12c’s that we’re pulled from a vintage modern cabinet.  They are in great condition and sound wonderful!  The stickers were removed from the magnet covers before I pulled them.  All my items come from a non smoking home. 
These speakers were originally designed by Marshall and Celestion to go into the limited edition Jimi Hendrix 100JH cabinets.  Marshall later put them in the vintage modern cabinets.  
These were a special order item directly from Marshall and could not be purchased unless you had a serial number of a cabinet that they came in.  
Here is what Marshall/Celestion has to say on these:  The G12C is modeled on an original G12M from 1966 to 67.

The G12C greenback's were referenced from a particularly fine set of mid 60s G12Ms.

The G12C is a G12M but voiced after a particularly nice vintage reference we had access to. We couldn't call it a G12M because that was already taken obviously, so we called it G12C which simply stands for G12 Ceramic. It is exclusive to the Limited Edition Hendrix and the Vintage Modern Series.

The G12C has been voiced to be the same as an original 'Golden Reference containing G12M's' we had which was absolutely beautiful - warm, balanced and woody.

On the difference between the G12M Heritage and the G12C: They are both versions of the original G12-Ms. They shouldn't really differ in punch, only voicing. They are both great speakers but the G12-C was specially devoloped to complement the Hendrix SUER100JH.

The G12-C is the speaker I developed with Celestion when I was doing the SUPER100JH. I couldn't find a current 'off the shelf' greenback that sounded 'right on the nose' for the early Hendrix sound (especially when a full stack of them was used) so I made some tweaks and tunings and finally arrived at what we eventually called the G12-C.

We couldn't call it a G12-M as that was already taken so we decided on G12-C which is what Celestion called their greenbacks before dividing them into Ms and Hs (The C stands for 'Ceramic' by the way which refers to the magnet material).

I decided to use the G12-Cs with the Vintage Modern range because it's fundamental tone is from that same period - 66 to 68.

SPKR-00095 = G12C with spade terminals and manufactured in China by Celestion’s OEM partner ‘GPE’ as used in the Vintage Modern series.

SPKR-00092 = G12C with solder terminals and manufactured in Celestions UK factory in Ipswich, as used in the Hendrix SUPER100JH 1982A and B cabs.

There is absolutely no sonic difference between the two at all.