How Many Made

I would suggest contacting Galen.

Your car was not all that rare,
but was not sold New in NY State, and prob not Calif.
as the back up lights were mandatory in NY,
in 1965 model year.

My Dad bought a 1965, 2 dr post, 225/ 6, 3 on the tree,
no radio, rubber floor mat, etc car new; from Armory Chrysler/Plymouth.

There were other "stripper" cars on the lot, in other colors,
he liked the light blue,vs Brown, etc.

There were more 2 dr Post made, than Signets though.

Was the 64 Signet, a 6 cyl car, or V8?

The Vin will start with a V, if V8.

There was 26,000, 6cyl 1964 Signet hardtop,
and 5,800 Signet V8 Hardtop, {like mine}
Plus 4700 convertible 6 cyl Signet, and 1300 V8 Convt. Signet. numbers rounded off.

Galens white book 1965 numbers 4th edition confuse me. :(