GB 1882 SGO3a Official Blue-black overprint, control block
Stock Code: P201005538
1882 1d Lilac, Die II (I.R. Official, Bluish-black ink). Very fine unmounted o.g. bottom right hand corner marginal control "N" block of six, from the July 1891 printing showing blue-black overprint. A couple light wrinkle affecting top row nevertheless a presentable example of this scarce departmental overprint variety. Spec. L3a. Ex Michael Astley Collection.
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