I have recently purchased a vintage Pratt & Lambert sign. I am new to collecting so I'm not sure of the correct terminology in describing it but it's 5'×6'×8" thick. It has a metal edge around it and does work except for one bulb being out. This is a sign that plugs in, (hardwired actually). There isn't one chip or crack in the material and the paint is in great condition, (probably 8/10 Or better). I apologize  for the picture but it was delivered to my storage unit upside down and its too heavy for one person to move. I'm looking to find any info I can on this item, age, rarity, value, etc.. Any information would be great! Thank you.