Watch List notes:

Great Britain, Queen Elizabeth II Issues, 1973 British Explorers, 3p. se-tenant pair, variety turquoise-blue (background and inscriptions) omitted, mint, a feint horizontal line crosses the top of both stamps but hardly detracts from this rare and striking variety. S.G. 923c, 924c, £5,000. Photo..

Estimate: £500.00 - £600.00