Well Andy...,
I guess no.
First of all you needed to find out the definite day of this photo and even better the car's VIN. "Early 1964" doesn't say much because that is between 2 Jan 1964 and 31 May 1964 or so...
However, "reading" your datacard provides more insight.
Does that 519 car on the factory pic has an aerial? Hard to see. Your car had since it was factory-equipped with a Becker unit (most likely Grand Prix or so).
But:
1) Your car was delivered with hard top (code 41-6); that's missing on the factory pic and that does not make sense if the car on the factory picture were yours.
2) Your car was delivered with whitewall tires (code 64-1) which the factory hubcap-less RHD car does not have
3) The factory car doesn't have a jump seat which your car has according to the data card (code 56-5).
So..., - sad to say so - but the car on the factory picture is clearly not your car. :'(
Sorry for the distressing news...
Achim