Hello dond,
You can become more familiar with the Mauser Parabellum looking at my web site and selecting Mauser Parabellum area. You can see several models.
http://www.lugerlp08.com
Concerning the year of production I will say late 1972, beginning 1973. Please check your pistol and the test target as well some times there is the date although most probably your pistol is FBM marked.
Enjoy your Mauser Parabellum!
Cheers,
Mauro