The Sakura Seiki Petal (8 corners) is a Japanese subminiature camera, an octagonal-bodied design from a small post-war Japanese maker. It is one of the smallest production cameras ever made, aimed at the novelty and miniature-camera market rather than serious photography.

With only a single recorded UK auction hammer result, the Sakura Petal is an extremely thin market: the one documented sale fetched £550 at saleroom level (wholesale, before commission). Today values for an authentic eight-cornered Petal sit broadly around that figure, but condition, completeness of the original case, and provenance can move what one is worth significantly in either direction.