Hi Darren, I see you know the Data Plate information. The 76A tells you it is a Convertible. The M tells you it had a Gulfstream Blue paint job on it when it left the factory. The XM tells you it had a vinyl Turquoise and White interior. The 09F tells you it was scheduled for production on the 9th of June. That does not mean that it was actually built on that day because the line could have been ahead or behind schedule on that day. So it could have been actually built before or after that date. The Tranny Code 4 says it had a Cruise-O-Matic. The Axle Code 1 says it had a 3.10 axle in it. So that is what she left the factory as.
If the car has been registered in the Thunderbird Registry, you can enter the VIN # off the Data Plate and it will tell you if a previous owner has registered it on the Registry. If not, you can register it yourself. The idea behind the registry is to make a record of every known Tbird made, whether it has been crushed, a parts car, or still in use. The link to it is:
Hope the information I have provided to you helps.