The value of the world's 100 most commonly traded stamps has risen by 6.55% in 12 months, reveals the SG100 Rare Stamp Index.

The index tracks postage stamp auctions and private sales across a range of regions, including Britain and the Commonwealth nations.

Up 4.95% pa since 2000, the particularly strong figures for the past 12 months indicate that the market is gaining in momentum.

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