What year is this Valiant?

According to your tag, you have a 1965 V100 Convertible.

Your tag also indicates it had bucket seats...very rare for the V100.

No such thing as a V100 rag in '65, it's a V200; also confirmed by VIN: V1=V100, V3=V200, V4=Signet. Also no buckets available except on Signet & Barracuda, it would have a code under the Z on data plate if it did.