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 .. Смотреть далее »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".

Страна:	Канада
Тип:	Почтовые марки
Серия:	Landscape Definitives 1972-1977
Номинал:	50 ¢
Год:	1972
Материал:	Non-fluorescent Vertical Ribbed with Two fluorescent Bars (OP4)
Размер:	24 x 30 mm
Перфорация:	comb 12½ x 12