Glavnij kalibr
I don't know much about this brand. What I was able to find is that GK is a project which was started by ex. director of the first russian company which imported swiss watches to Russia. If this is just a brand or has grown into a serious company is unknown to me. But since there are already seven different models in GK collection it seems that project has grown to a company. Where GK watches are assembled is again a mistery to me, almost all models use Miyota quartz movements, RKKA model is for now the only one with automatic (also Miyota) movement.
I have two watches from GK collection. The first one is "Pervij v kosmose", which is a part of Space collection. The second one is Parovoz Josif Stalin, watch which is dedicated to the steam train from 1937.
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![](https://primary.jwwb.nl/public/q/k/g/temp-cxjawqaykyjjgrncegvd/kcqiwh/image-915.png?enable-io=true&enable=upscale&crop=1920%2C1920%2Cx0%2Cy0%2Csafe&width=438&height=438)