Note the lack of white binding around the fingerboard and the replaced but very attractive fret-markers.
The flared-top headstock, indicative that this is a very early 464/S model. The original wide-barrel tuners have been replaced with similar 3-on-a-plate type, but with plain spindles instead of the usual white plastic-surrounded version fitted to the 464 model.
Close up of the replacement fret-markers.