Cdf du Nord 0-4-0VBT (Vertical Boiler Tank) no. 2.012 was the shed pilot dépôt Boulogne and is shown here going about its duties on 20/9/1928. This class comprised 35 examples and 2.012 was one of a batch of twelve built in the period 1881-1883 by Société Franco-Belge but only two survived into SNCF ownership in 1938 and this example wasn't one of those.
There's an interesting difference in the linguistic interpretaion for vertical boilered engines: the French nickname is bouteilles d'encre (ink bottles) whilst the British describe them as coffee pots.
[Mike Morant collection]