Hugh, here is a little bit of extra info on no decal-silver grille.
From reading a proposed variation table from Antonin of the 6b Euclid
here , he has his code 1 as NO decal but with mask spray silver grille.
Interestingly he does not show the decal version with mask silver spray as shown by Greg and George in the past for example. I wonder if Antonin’s elves have found one yet.
Antonin shows his code 2 as NO decal NO trim and with the quantity of these found over the years I do not feel this should be classed as an error model.
It is interesting that the photos of the above from hydra427 John do not have an angle showing the grille, it would be nice to know if plain or silver.
Note to admin and or Hydra427 John
Could I suggest that the title if the thread includes “6b Euclid” to assist collectors in future searches please.
Bert