Metal An Poist Stamps

enfield

Hello all.
I just wondered if the metal stamps used by the post office changed their Irish Spelling (from English?) in the late 1940'2 or 1950's? The reason is that I picked up two 'work books' that seem to have been used to establish the correct spelling to be used on these stamps. They appear to be from the late 1940's or 1950's and have written comments beside the Irish wording that is to be used and why, and also lists which references were used to establish them.
It sounds a bit mad, and I did not think that it was done, but obviously it was, and had to be done to make sure the spelling of each post office stamp should be spelled correctly. They seem to have been used by Colm Mhac Fhusl, Rúnaidhe.
Kind regards.
Tom.

Missent

Mackay, in "Irish Postmarks since 1840" says that the instructions to local post offices in Ireland to change their datestamps to Irish were issued "early in 1922." Changes were made to the datestamps from time to time after that so the workbooks you have may relate to subsequent versions of the Irish datestamps.

enfield

Many thanks for your kind reply, that really helps.
Kind regards.
Tom.