Derek, This appears to be the "Black Fire" guitar we made for John. It is one of the last prototypes we made before the first hand signed run. The color is Dupont Chromalusion Black Fire, which is something his tech thought would be cool. John liked the Chromalusion concept, but not this specific color, and we then introduced the "Mystic Dream" color.It is also prior to the special design Petrucci knobs. Re. piezo; Petrucci guitars come with piezo as an option, and this one was ordered without. John has several guitars with the piezo, and several without. I don't know why there is no record of this serial number, or if we have any record of this Black Fire prototype. Dudley Derek Brooks wrote: -- Derek Brooks Ernie Ball, Inc. Subject: John Petrucci Model PROTOTYPE 6-string Date: Mon, 3 Mar 2003 14:03:57 -0600 Hopefully you can help in this matter. I collect rare guitars and was fortunate enough to acquire an EB/MM John Petrucci Model Prototype last spring. I tried to arrange something with the seller to have Mr. Petrucci send me something to authenticate the rarity of this unit but since Mr. Petrucci is quite busy, and rightly so, I have not received anything from him or the seller. Which is why I'm writing you as a "second source". I've attached JPEGimages for your examination. The serial number on the neckplate is "G12101". Differences in this unit and production models are the lack of the Petrucci signature on the headstock, the "top hat' knobs on the volume/tone controls instead of the "barrel" knobs, and the lack of a piezo output control on the back of the guitar. If there is any info you could release to confirm that this is indeed a prototype, without violating company policy, it would be of great assistance. Such info could include date of manufacture, run length (i.e. this is the "nth" guitar out of "y" made), or anything you may deem adequate to prove this unit's authenticity and/or rarity. Thanks for your help!