The side curtain roadsters were made until Feb 64, so it could be. You actually have to go by vin to find year of manufacture.
Title year doesn't really mean much with imports at that time. My MK 1 Midget is titled as a 64 but is actually a 63. Manufactured Jan 63, but not originally sold and titled until March 64. I learned a long time ago to say 63 when talking to parts people.
There were about around 450 MK 1 Midgets Made in Jan and Feb 1964, and if I remember right, just under 600 Mk 2 Sprites made in Jan and Feb, before the change over.
_________________________
Bryan Durham
-USAF tired and retired-
No, my car don't leak, it's just markin' it's territory.
1963 MG MIDGET - BLACK with Red interior