Kamaka (Japan) kk 20 tenor / concert ukulele. Mid 60's Japan made finished in Hawaii. Photos show slight top joint bulge and deep scratch or crack on side not all the way through.Both are very stable and have not changed in my ownership. Neither effects playablity or tone. Rosewood fretboard and guitar style bridge with pins. I love playing this uku but need forces sale. 

contacted Kamaka Hawaii and they said:

 "Thanks for the photos.  That’s a very nice-looking Kamaka concert ukulele.  It was made in Japan in the mid 60’s.  The body is Philippine mahogany and the fingerboard and bridge are rosewood". 27 1/4" from bottom to tip of headstock, 21 1/4" from bottom to nutt. No case but will be packed very safely.