5 June 2017 - Machin 50th Anniversary gold embossed £1 stamp.
This stamp is included in a pane of 4 in the Anniversary Prestige Stamp Book, and is also available in a miniature sheet. Specialists have determined that there is a slight difference (possibly 1 mm) in the size of the phosphor bands.
The embossing on the MS is generally deeper than on the PSB pane, but again that is only for the very specialist. We are supplying the stamp from the PSB.