[CG63]

This is a 640 built in 1952 on a commercial FN 98-mechanism. It's a large ring Mauser.

 

[CG63]

Not to sound stupid but what does FN 98 signify or is this just a part number or does FN stand for a name or mfg?

Mauser 98: http://en.wikipedia.org/wiki/Gewehr_98

FN: http://en.wikipedia.org/wiki/Fabrique_Nationale_de_Herstal

As far as I know Husqvarna bought all Mauser 98-mechanisms from either Mauser (very few) or FN, and they were all brand new - no military surplus.

For more information on Mauser rifles I recommend Ludwig Olsen's book: http://www.germanguns.com/books/B060.html