Kawai KS-10-XL & Kawai KS-10-Junior
The KS-10 was the "entry model" for the range.

Body: Solid silver heart or white ash or mahogany
Neck: Three-piece hard rock maple
PickUps: 2 humbuckers, manufacturer unknown
Controls: 2 volume & 2 tone, 3-way pickup selector switch
Other: The mini-toggle (between the 2 tone controls) coil splits the HBs.
Finish: Available in metallic silver and violin sunburst.
The guitar used a 25 5/8" scale.
The body is obviously different to the KS11 and KS12 with the extra cut-out at the bottom of the body. Slightly less obviously, the twin cutaway / body horn area is shaped differently as well.
The body was flat topped with no carving, just a slight round-over on the edges.
Guitar jack socket on the face of the body.
This is my KS-10-Junior

Note the two piece bridge/tailpiece which is the most obvious difference between the "Junior" and "XL" models.
I bought this one via eBay a few years ago.