Manhattan Brewing Company Inc Hand painted Oak Barrel Keg Top w/ Glasses

I picked this at a garage sale in 2012. It is a hand painted oak barrel end from a keg from the Manhattan Brewing Company Inc. Apparently it was open only a very short period of time from 1984-1992. It is signed by the artist.

I also have a sealed bottle of their beer hand serial numbered out of 2000. There are also four matching glasses. I love this item and having it hanging on my wall. It is a great piece of beer history in manhattan and NYC. I believe it might be a one of a kind item due to the rarity of the barrel end and sealed bottle.

I would love to know how much it is worth.