Now, only one of these mugs is marked "Otagiri" but you look at the other 4 and tell me they aren't the same. 3 have a blue gray tone and the others have a cream tone.
The mugs are in great vintage used condition
One is marked "Otagiri Japan" the others are unmarked.
3-3/4" tall x 4-1/4" across (including the handle) x 2-3/4 the other way.