Danish modern vintage Scandinavian art glass crystal vase, tall mod flaring shape

Vintage green glass vase, with great mod shape, and beautiful clarity. We believe that this might be a Scandinavian art glass piece, it doesn't really look like Italian or West Virginia glass, but more like Swedish crystal. This has no label, or marks or signatures that we saw. The vase measures 12 1/2" tall and is in excellent condition.