Definition of spade guinea in English:
A guinea of George III’s reign with a spade-shaped shield on the reverse.
- Note that the obverse is quite different from that of the spade guinea even though both picture George III.
- As you rightly say, the imitation spade guineas dated 1797 were used as gaming counters.
- During recent alterations a treasure trove of golden spade guineas were found beneath the hearth of the western fireplace in the lounge bar.