Small signature that appears to be a capital "F" with copyright mark and "Ster". 1 1/2" diameter and 2 1/2" hanging length.
Turquoise is from the Royston Mine which is noted as known for its "dramatic deep Green color". Canteen is a "faithful miniature of a 19th century canteen shape".
Never removed from box until now and original price in 2004 was about $130.
This Estate included many Native American pieces and lots of NA jewelry as well so we are guessing on the origin of this piece though it is noted as "Southwestern" on the original paperwork.