United Billards Coin-op Pool table

Looking for help in placing a value on our pool table. The maker is United Billards, Inc, Union NJ. Coin-op- likely built in the 50's- 60's. 7' x 4' Any help or advice would be greatly appreciated.
Thanks!!!

[stickman]

I had one that I bought for $400.00, played on it for a year and sold for $400.00. The coin op mechanism was not in it, but otherwise was in fairly good shape.