A superb 10/- SG 128 Colour Trial - full description below. A superb unmounted mint 1878 10/- Colour Trial in Blue overprinted Specimen, top marginal with inscription, pristine gum. Many more interesting items over the next few weeks. Come see us at a Fair - check out our dates above and on our site.And enter the search term in the box, or use the index on the HOME PAGE. Members of the Philatelic Traders Society (PTS). Great Britain Philatelic Society (GBPS). The item "1878 SG 128 10/- AB Superb Unmounted Mint Colour Trial Specimen Cat. £2400.00" is in sale since Tuesday, April 9, 2019. This item is in the category "Stamps\Great Britain\Victoria\Surface-Printed Issues". The seller is "pennyblack1" and is located in Dorset. This item can be shipped worldwide.