Sigma SDR-28MLE open tuners brand?

[meigo1234]

hey there,

thanks for having a look

I've unscrewed a tuner of my sigma sdr-28mle

it says in the description that these are grover open vintage tuners ...
But, the logo... do you know it? its on the side facing the wood.
is it really grover, is it some chinese brand? maybe its flipped, I dont know ...



thanks for any infos
all the best
michael