Seashore

Under UV light paper does not emit a glow, tags glow yellowish
Stamps tagged with experimental OP4 tagging which was found to migrate to other surfaces. stamps should be kept isolated to prevent .. Дивитись далі »fluorescent migration to other stamps
fluorescent bars 4mm wide applied to vertical perforations of the stamp.
Type I - minimal blue shading on cliffs.
SG colours = "blue-green, royal blue and buff".

Країна:	Канада
Тип:	Поштові марки
Серія:	Landscape Definitives 1972-1977
Номінал:	50 ¢
Рік:	1972
Матеріал:	Non-fluorescent Vertical Ribbed with Two fluorescent Bars (OP4)
Розмір:	24 x 30 mm
Перфорація:	comb 12½ x 12