No sn data down to that detail
I can supply half the answer (the easy half) Mossberg made this firearm as with most Western Field firearms.It was the Mossberg model 800A and was made from 1967-1972.
Your westernfield model M780 was made by mossberg.The mossberg model number is mossberg model 800A.
Mossberg for Montgomery Wards it is the mossberg 800a
It is a Mossberg 800A. Value anywhere from $200-$250, depending on condition, scope, etc.
100-400 USD or so
Your westernfield model 767 was made for mongomery wards(westerfield) by mossberg gun manufacturing company.The mossberg model designation for your gun was the mossberg model 800A.
Try contacting Mossberg or e-gunparts.com
Your Western Field model 768 was made by mossberg for the Mongomery Wards company(Western Field).The mossberg model 800A is the same rifle as yours.
I'm not sure of the value but the 800A should be a Mossberg Model. Experience tells me the value will be a tad less than Winchester M70 and Rem 700 in the same version of the gun--(like in) Walnut stock or Symthetic version.
Your rifle is a Mossberg 800A. Some parts may be available from Mossberg, some are available for gunpartscorp thru their website, and some may be available thru havlinsales at their website. Good luck!
800a-m- - 2009 is rated/received certificates of: Spain:T