Pre-Columbian Relics, Need info on where to find value..

[Silver Surfer]

I have a couple of Incan "Jade" pieces that I am trying to ascertain the value of. These came from Ecuador in the late 70's and were in a really nice old leather/velvet lined box... Beautiful pieces.
One is a "mask" and the other the tip of a digging tool. The measure stick is 6" for reference.

 

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