Concho belt squash blossom necklace

Appraising & Evaluating
1

Please can you tell me what are the stamp on my real sterling silver turquoise belt was $ 1200 in 1976 I want to sell it
and I am supiscious on the authenticity of the turquoise on the necklace a friend give it to me to sell, greatly apprecited your advice on it
Best regards

<img src=/uploads/db1846/original/1X/1af2aa39938f09a878722e19f9368524ae218af8.jpg">

<img src=/uploads/db1846/original/1X/5bc740560c1b55d89767871fd02bc9256b2c0228.jpg">

<img src=/uploads/db1846/original/1X/5bc740560c1b55d89767871fd02bc9256b2c0228.jpg">

2

If you would please retake the picture in natural light, can not make out the stamp on the buckle.

3

From the picture the stones look like real turquoise, thanks for sharing.