Watch List notes:

IONIA. Uncertain. Circa 550 BC. Trite (Electrum, 12 mm, 4.41 g), on the Milesian weight standard. Two rampant lions, heraldically arranged on left and right, standing upright on their back legs and touching with 'forlegs", their heads reverted; between them, stylized lotus flower (?). Rev. Incuse square. Unique and unpublished, a coin of great interest. Very fine.
From a Swiss collection, ex Obolos 5, 26 June 2016, 320.

This is a particularly difficult coin: Its design clearly resembles the Stater from the Rosen collection (no. 149), ex Nomos 3, 2011, 118, of which it appears to be a 1/3 fraction, but it is of much cruder style.