Can it be that you made a mistake decoding the trim tag?
I ask because the car is a 4-door hardtop and I have found evidence of metallic blue paint on some places.
Here is the full vin just in case:
64 Impala 8 cyl
39 Sport Sedan 4-door
1 Oshawa Ontario
139368 serial number
The car has power steering and brakes and a rear window defogger plus maybe some options that are not so obvious.
Don't know if all options would be on the trim tag but I'm interested in what it says.