High pattern green butterdish marked 1092/6

Rare high pattern dark green coloured butterdish which is unusually marked. The marking just features numbers and not the standard MPD coded markings. The high pattern butterdish can fit exactly two time the content of the normal patterns. The usage of the high pattern butterdishes is unclear but for sure is original. The lid could be easily changed with a standard pattern butterdish and would make a perfect fit. Very rare and interesting example!