Chiyoko(minolta) Minico and Kowa Prominar Opera glasses
	Both glasses folded
	Front of Minico. Note the early Chiyoda Kogaku Trademark.
	From the eyepiece side. MINICO name is printed on this side.
	Power and MIOJ printed inside.
	The pair folds very compact.
	Into a purse like pouch.
	Today the Prominar name is prominent on their spotting scopes. But they started out with these humble pairs.
	Coated optics and Japan marking imply the date after 1952. 2X power and 20mm diameter.
	The depth is very thin.