Help ID a Dutch oven

My father has had this Dutch oven for a long long time. He got it from his mother, who has been gone for a while now. He asked me to identify it. I don’t know.

Any help would be appreciated.

https://imgur.com/a/6HxFngH

BSR Red Mountain, very nice!

I have the exact same DO very nice piece once I gave it some TLC .
I was fortunate enough to have it given to me by a friend that knew I had a love of cast Iron. It had been in his garage for many years . it was used to store nuts and bolts. now it is in good hands.