I have received two. The first was Gottlieb Niagara from 1951. Physically in clean decent shape however the back glass has just been broken. Playfield looks nice, cabinet is nic as well. It is missing some parts but I believe it is well above a parts machine. I This was given to me in the late '80s while I worked in a bowling alley. Has been in my basement every since.
The second one is a 1978 Gottlieb SS, Charlie's Angels. I got this around 1990, a fellow from the upper peninsula send it to me for the price if shipping which he charged $50. I had to rebuild the cabinet as it was split and not stable. All of the parts are there and really does look very good. My Dad and I worked on the electrical aspect and had it lighting up and doing the attraction mode, but could not get the game to register credits and actually play.
I may get those out this spring and tinker with them again. My Dad, my electronic expert has passed away so I will not have his expertise to guide me through the electrical which will be rough.
But now that I will have some time, I do want to get them out and maybe some new pinheads would like to take a swing at them. I would love to see Niagara in its prime again for sure, or if someone wants to help me I am eager to learn.
I am glad I have held onto them but it is maybe time to share them to further the hobby.