used 1876 "16 cents." on 18c. lilac , variety space between "n" and "t" cancelled "F1", together with a normal in a deeper shade for comparison, both wing-margin examples. Ex Dr Riddell S.G. 20a, #400
used 1876 "16 cents." on 18c. lilac , variety space between "n" and "t" cancelled "F1", together with a normal in a deeper shade for comparison, both wing-margin examples. Ex Dr Riddell S.G. 20a, #400
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.jpg "Source: Christie's")
.jpg "Source: Christie's")
