M097 is Anniversary Model (D) ... not Jubilee... check here on page 483.
http://www.porsche.com/all/media/pdf/originalparts/en/E_911_89_KATALOG.pdf
According to the "Red Book" There were 1000 made- 300 came to the US (M098) - 100 were Cabs- Doesn't say how many were made for Germany...
Are you sure you have an 89 (K) and not an 88 (J)? What month was it built? Maybe you have the only '89 with this option ;-)
I've heard the 25 year anniversary model made in '88 referred to as Jubilee and there was a 964 Jubilee model in '93 but can't find any references to an 89 Jubilee version.