http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=260327697710
I just listed this today.

This is one of my personal amps, custom voiced to my personal preferences. Built in October 2008, it was burned in 24 hours, and has about 3 hours playing time on it - has never left my studio. It has a great Plexi tone, clean to mean, a very functional master volume (when fully dimed it's transparent). This is the model I feature on my website at www.GrangerAmp.com
I LOVE this amp, but I have to make room in the studio for more workspace! 24 amps is too many!
-Curt Granger
Details:
Handwired 50 watt all tube "Plexi" amp (head only). The circuit is based on the 71 era JMP50 with a few extras, and more "grind." Aluminum chassis, Heyboer 50 watt output transformer and choke, Weber power transformer, Sozo and Solen coupling caps, JJ ECC83S pre's and E34L power tubes. Rectifier is UF4007 diodes x4. Post Phase Inverter master volume (Lar-Mar) in channel 2 (normal) bottom jack location, bias test points and individual bias adjustment pots on rear. Filter caps are JJ 50/50 @ 500V, and an F&T dual 33 on the preamp. Carling toggle switches, Cliff input and speaker jacks, NKK/Mojotone impendance selector, Alpha pots. Combination carbon comp, carbon film, metal oxide resistors.
Sound clips are available here - http://grangeramp.com/m50.php