It is not a Kamaka as the headstock is not a production type..if you are going to play the uke regularly i would change the tuners to Gotoh UPT tuners easier to use and are better ..but keep the old tuners
Those tuners are made by Schaller. Kamaka has used them extensively, but other makers have as well. I always felt they were heavy and over-engineered, but some people love them.
Those tuners were made by Schaller in Germany. I think they discontinued those after Kamaka started to use other tuning machines like Gotoh. You can still find those big thumbscrew tuners nowadays, made by Grover. They are pretty good in term of quality and smoothness but I heard that they are a bit heavier than those normal friction tuners.
I was having a guitar purchased by my Grandpa but due to some financial crisis and to repay the payday loans in FL we have sold it last year. All this was due to COVID and our poor financial conditions only.