![URUGUAY - 1930 - PROOF: 5m bright violet 'Centenary of Independence' issue, imperf 'Waterlow' COLOUR TRIAL in unissued colour mounted on card with 'Waterlow & Sons Ltd SPECIMEN' overprint in black. (SG 639) (URU/31141)](http://latinamericanphilatelics.com/cdn/shop/products/URU31141_{width}x.jpg?v=1613901860)
5m bright violet 'Centenary of Independence' issue, imperf 'Waterlow' COLOUR TRIAL in unissued colour mounted on card with 'Waterlow & Sons Ltd SPECIMEN' overprint in black. (SG 639)
5m bright violet 'Centenary of Independence' issue, imperf 'Waterlow' COLOUR TRIAL in unissued colour mounted on card with 'Waterlow & Sons Ltd SPECIMEN' overprint in black. (SG 639)