Identifying Native American Hallmark on ring


My sister gave me some Native American jewelry recently and I’m trying to put a identity to it. These items are from the 50’s era and one pendant/brooch is particularly interesting to me. I found one site that had a exact pictorial as the markings on mine ( #048 shop? but mine has additional inscription above that symbol as shown in my attached photo. Does anyone know anything about these markings and if not, where can you direct me to get more info? I would greatly appreciate the groups help on this!


Can you send a picture of the work? Also, are you sure that this is from the 50’s? Thanks for sharing.