To enable quickly finding the display position of the number of photographing times, and to enhance the visibility of the display.

A counter disk with marks 30a is covered with a transparent top plate 29 where a lens part 37, an index 38 and a rough surface part 40 are formed. The index 38 is arranged on the rough surface part 40, the shape of the index 38 strikingly stands out, then, the index can be clearly confirmed. A counter window 36 is formed so that the outer peripheral edge of the counter disk and the outside area can be viewed, then, the index 38 and the white rough surface part 40 are observed in addition to the mark 30a, and the existence of the counter window 36 can stand out.