Original 17&1/4 x 25" framed mirror/concert poster for the Grateful Dead appearing at Nassau Coliseum in Uniondale, NY from 10/31-11/2/1979.

 Photo by Herb Greene, this piece was made as a gift for one of the promoters (Tony Ruffino, John Scher, Ron Delsener and Larry Vaughn- I'm not sure who was the recipient) and is presumably one of only a few made. The mirror itself is in very nice shape- there is a bit of age spotting around the outer edges and a couple of light surface scratches/smudges here and there, but overall it looks GREAT (sorry for the reflection!) 

 VERY UNIQUE (definitely the only one I have ever seen) Grateful Dead concert artifact from the Halloween '79 run at Nassau. Check out the Halloween show HERE:

https://archive.org/details/gd79-10-31.sbd.miller.29410.sbeok.flacf