Yes, I pulled the cockpit trim got # and paid BHT to tell me date, number, colors.
Title had some random # on it. And said 1956.
OK, you own a BN1 made in 1954, that could/should be titled as a 1955. Since it was made in mid-November 1954, it's pretty unlikely that it made it to a USA distributor, and then to a dealer, and was then sold before the end of December (yes, it could happen, but such speed is really unlikely; some cars languished in the UK for weeks or even months awaiting export).
And even if it were sold to its first owner in 1954, it's unlikely that they'd call a car sold new in December 1954 anything but a 1955 model, following the American marketing scheme of introducing the next year's models in the fall (e.g., the 1955s were introduced in September 1954).
But the main takeaway of this exercise, for me, is that your Healey is a BN1.