Hi all, I'm in the process of a thorough catalogue update for all additions in the past five years which - due to lack of time - have only been registered in a basic way. Many model-related references will have to be added and essays will have to be written or considerably improved. Now I have arrived at the newly acquired timber carrier, the no. 36a Willème tracteur et semi-remorque fardier. Reading the 2nd edition of Roulet has the fortunate spin-off that my French is gradually improving. Still, I meet texts that I'm not sure of understanding them fully. There is a paragraph about the wooden and metal prototypes for the tractors, for the fardier and the one with cattle semi-trailer, no. 36b. It says that the metal one for the cattle truck tractor is unusual because it has the smooth inside cab ceiling. I understand that this is early, certainly before the regular production of the cattle truck, which always has the checkered ceiling structure inside, in my opinion. Now, analysing and describing my no. 36a Willème timber truck better, I discovered that this one has the smooth ceiling. Of course this issue is two years older than the cattle truck. However, in the four variants Roulet describes there is no word (if I read it well) about a smooth or checkered cabin ceiling at all. I do not have a big French Dinky collection but all my larger commercials are rather early, but still have checkered ceilings without exception. Now my simple question: Is the smooth ceiling for no. 36a unusual and when did this change-over from smooth to checkered inside roofs take place, both in general for the whole range, and in particular for the fardier? I presume my friends Richard and Jacques will be the most knowlegeable candidates for an answer ... See some photos below, thanks in advance, kind regards, Jan