Factory OEM 1965 1966 Mustang RH door window regulator.  Works great, not sloppy or loose.  Smooth roll up and down.  See video and pics.

Screw in window cranks.

Removed from a car in Texas many years ago and has been in dry storage ever since.  All threads and splines look perfect as do the gear mechanisms and spring.  Very little signs of use.  No rust that I can see, lots of dust from sitting on a shelf and the grease is old original factory-applied grease and should be replaced.  This regulator is in the most excellent condition.  Probably as close to NOS as you can get.  This is much better quality than any aftermarked replacement available.  

The item in the pic is the actual item you will receive.  Please confirm fitment for your intended application and ask any questions before buying.

1964.5 1965 1966 64.5 65 65 Ford Mustang Coupe Fastback Fast Back 2+2 Convertible Convertable Shelby GT350