Note: source comparison sets 6523-1 (2 different box types) and 6523-2 https://forum.brickpirate.net/viewtopic.php?f=18&t=24565 ****** UPDATE after my first addition: I read the French text again and found an additional entry for part 2348a, this was in the 1987 version, 2348b was present in the 1988 version during this comparison. I have no idea if this special set came out in 1987. My box says (C) 1988. (so not like in other box updates that the (c) has multiple years). Also, the normal regular update version has the same, just the (c) 1988. Both the 1st regular version (small box) and the 2nd version (larger box) as well as this special promo always have the same barcode - EAN: 5702010965236.