You may be right! The seller was in no doubt and referred to them as #270 in the TA catalogue. This one has what I thought was 'TA. MADE IN FRANCE' written on it but now you mention it, it looks like 'I.A. MADE IN FRANCE' It is the same as the one on Velo Orange, which is the same as the one in the thumbnail below. The bike is the same as mine, too