Delays in manufacture.....pushed to the side lines...finished way later.... Sold dates.....depends..... my Goose didn't "sell" for 2 years as it sat on a L-M dealership floor room as a draw car...... Registered....wild animals did this stuff...... Euro registrations are sometimes allegedly based upon build date, or purchase date, what some dude randomly told the reg' folks.....same in the US! Gotta wonder if there was any sort of chart for DeT serial numbers given to DMV's......... Euro dates many times were based up on manufacture dates vs "model year" dates as done in the US.....
Your 71 Pantera could have been a 1970 Pantera in Europe, as it was made in say Sept-Dec 1969! I don't believe it is all that uncommon to find this situation in cars built later in the year......
Confusion rules!!!
Ciao, Steve