Is the stock ferrule screwed on from the front? Is the bottom of the mag well glass bedded? If so, this may be a US match bedded stock that was installed at a later date. The Danish surplus Garands have been in civilian hands for 25 years or so with many opportunities to do this or that.
For example, I've installed a NM rear sight on one of my Berettas and have rebuilt one of my Springfield Garands with US GI NM parts incl a match bedded stock, rear sight aperture and op rod. These aren't match rifles; they're just tweaked with match components.