Cdf du Nord du Bousquet - de Glehn 4-cylinder compound 4-6-0's nos. 3.513 and 3530 in charge of an Up boat train pass dépôt Boulogne on 4/4/1931. Both of these engines were built by d'Hellemmes in 1908 and would become one of the numerous 230 D class under the SNCF. Two of these superb machines have survived into the heritage era but I have no idea when the last example was withdrawn from service.
[Mike Morant collection]