Arnold Machin Centenary MS update - new source AND year codes!

Thanks to a reader - we don't yet have our stock - we can now show a single stamp from the Arnold Machin Centenary Souvenir Sheet.  As you can see this has the year code AM11 and the source code MMIL.  In full the relevant line of the overlay reads ALAM11ROYALMMIL.

And from the postagelabelsuk blog, we can show the Machin Centenary Faststamps. All 6 values will be produced by the Hytach machines Stampex: