Identifying Navajo/Zuni Artist Mark - EQ ? EO ? ED? with image

Im trying to identify the artist of a squash blossom necklace. I have reviewed the sites that detail artists stamps, but am unable to find this mark. It appears to be an engraved versus stamped mark. I know the first letter is E but the second letter is a bit more difficult for my untrained eye. Any additional information is greatly appreciated.

thank you for your time.

The best thing would be to attach a photo of the necklace and the hallmark. You can do that by replying and using the upload button . Thanks