Vintage native american 925 and torqoise bracelet

This bracelet is very nice. It is around 6" long and 1 1/4" wide. It is 37.9g of semi-flexable sterling silver. It is stamped and I'm told its made by an extremely well known and desired native american jewlery maker from along time ago. I included pic of hallmark if you care to look further for more info on that cause thats all I know. I was told I can easily price this for $650+ so im going to price it at $450 and entertain any reasonable offers.