Ye', also just looking at the plate tells you when and where it was first registered. In this case it's a suffix plate where the age identifier is on the right.
L being 1973, if it was a prefix plate, the age identifier would be on the left and L would be 1993/94.
In the block of three letters is the regional identifier, in this case MM, which up to 1975 was London.
The three numbers and other letter are insignificant.
@pip-bip I remember when I was a kid, one of my neighbours got in an accident in a Strada. If I recall correctly, his apprentice was driving and he binned it into a stone archway under a bridge at about 40mph. They both survived and weren't too badly injured. Remarkable really, considering how lightly built those cars were.