PGSS sign for OYSTER

OYSTER [Opening of shell]
Hold 1st CUPPED hand, palm upward & fingers forward-inward, and put 2nd CUPPED hand, back upward & fingers forward-inward, with its palm on 1st palm; then keeping root of 2nd palm on edge of 1st palm, by wrist action move 2nd hand backward-upwards till back backward-outward & fingers upward.
[Compare BOX2]