£999.00 may seem a lot for what appears to be a football stamp but these rarities remained unrecorded by collectors for many years and there are but a handful known in circulation. Miss this and there will not be another. I only have this 1! It comes from a sheet of decals known as red-star or 8-star transfers due to the design that appeared on the complete sheet. The actual issuer remains unknown but it may be Red Star comic, a publication of the time. This decal of Stanley Matthews is his ABSOLUTE rookie issue! It pre-dates by 1-2 years the Barratt team folder of 1934, and by 2-3 years the better known cards of Matthews from 1934 and 1935.
Here's more about this series, by James Cotton of Vintagefootballers.com (thank you James)