Whetstone Stamp Question.

[Beo]

Hello,
can someone tell me what kind of stamp this is. I have two nice whetstones with these stamps on it. One is Asagi, one is Karasu.
Kyoto whetstone association is clear but the other is not known to me. Someone have a idea?
Plaese help me. Thank you

 

[ethompson]

Someone can correct me if I’m wrong, which I may well be, but I think this just says “honyama” and “old stock” and “good quality.” So no real mine identifier

 

[Beo]

Thank you for your fast answer. That helps me