China, 1644-1950 AD., Sex Education Marriage Charm, Qing (Ch'ing) dynasty or a 20th Century reproduction.

China, Sex Education Marriage Charm, Qing (Ch'ing) dynasty or a 20th Century reproduction, 1644-1950 AD.,
Charm (ø 27-28 mm / 9,86 g), cast bronze, square center hole, axes medal alignment ↑↑ (0°), plain edge,
Obv.: 风 花 雪 月(top to bottom and right to left of center hole) , "feng hua xue yue" which translates as "wind, flowers, snow, moon".
Rev.: four couples making love in different sexual positions.
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Chinese marriage charm that was given to newlyweds to illustrate how they should perform on their wedding night to meet their obligations to family and society to produce children.