This Collins 75S-3C Receiver, is a serial number (13110 MCN # 1411) radio, in excellent Condition.This radio has a service tag indicating it was back to the factory in 1984 for service and updates.It has been stored unused for many years. It has never been in a smoking environment and is as clean as a new one.This Radio is absolutely beautiful with no bad marks or scratches, only a tiny mark or two on the cabinet that is really hard to see. The front panel and chassis are really Clean inside and out!Everything appears to be original. This receiver has a metal trim ring which is desirable as it will not "yellow" with age as the ABS plastic trim rings will do.. It is rare these days to find a nice 75S-3C and even more rare to find one in this nice condition.I did put this receiver on the air and all functions worked as they should. The received is sensitive, and has excellent receive audio. The PTO is smooth and dial calibration is very close.The receiver comes with the original Collins Power cord and I will provide a reproduction of the proper dated manual.I also have a variety of Original Collins manuals on my web site.There are no optional filters installed just the standard SSB Filter.As with most vintage gear, this receiver may benefit with an alignment or tube replacements, but it does appear to be working great as it is.This receiver has all the original electrolytic capacitors. It would be prudent to change them to modern replacements too assure trouble free operation. I have Capacitor replacement kits available and will make one available at my cost if you would like to update this receiver.I am very proficient packing this type of heavy vintage radio gear. The unit will be double boxed and professionally packed to a degree you can not get from normal packing facilities.