Congrats Roman! Only a few of these have come up for auction in recent memory.
Caution - price discussion for collectible items in the spoiler $821 is about $80 less than what my factory customized Industrial SSKs sell for with my off eBay discount, so it is in line with what many of these ISSK's in great condition have sold for. It is interesting these ISSKs sell for more than F62s which are also in high demand and low supply. Though I am basing the F62 estimated price on that one unit up on eBay a few months ago.