I'm sorry if I'm violating forum rules by cross posting, but I didn't get any replies in the Grateful Dead section. I'm hoping someone will see this here.  TY.

Hey now fellow collectors.  Please take a look at this amazing piece and tell me your thoughts as to value.  This was supposedly presented to the famed artist Stanley Mouse.  I was told that this was given to him by the band in recognition of his artwork which appears on the album's cover, however Stanley himself informed me last week that this piece was actually presented to Alton Kelley as he did the majority of the artwork.  Stanley just did some airbrushing.  Please note that the album cover was signed by all six of the original members, including Pigpen.  I have owned this piece for over 20 years, but sadly I may have to part with it soon.  I have done some research, and I cannot find anything comparable out there on the market. This is truly a one of a kind piece.  I really appreciate any info that you guys/gals can share.  I have more photos upon request.

Thank you very much,

Ari