On Easter Saturday 1960, an untypically clean Gateshead A1, No 60129 'Guy Mannering' is observed at the south end of Grantham station, possibly about to be relieved by a fresh engine to take the train on to London. Rivet counting model builders have a good subject to examine here, this A1 being the last of the early batch of Doncaster built locomotives. The Darlington A1s from No 60130 onward sported flush sided tenders, with not a rivet head to be seen.
What's interesting is that the location of rivets completely avoids the BR crest including the obvious place where a rivet head would be in the word 'Railways'. A matter of chance?

© David P Williams / Rail-Online Original photograph by Les Perrin