This sheet was Issued: 18th April 2001 Designed by The Agency Ltd. The stamps are printed in lithography by BDT. I am informed that the stamps are Perforated 14 x 14
You can also obtain this sheet overprinted for The Hafnia '01 International Stamp Exhibition.
Whilst we are on the subject of stamps on stamps I would like to show you another two Isle of Man miniature sheet (sadly not Machins) that are amongst my favourites.
The first is a £1 miniature sheet commemorating 150th Anniversary of the Penny Black Issued: 3rd May 1990. The second is a strip of 5 values.
Design: by Colleen Corlett, Engraving : Inge Madle.
I believe they were printed in recess & lithography by Enschedé. Perforations are 14 x 13½ - Stamp sizes 26mm x 30mm (1p-37p) & 51mm x 60mm.
(£1) Miniature sheet 100mm x 71mm
The 4 values, 19p to 37p, were only issued in the strips of 5 illustrated.
The 1p value is also available as a sheet of 25.
I am informed that the strip of 5 values illustrated is also available overprinted "From Stamp World London '90 to New Zealand 1990".