A thorny one this - and probably a hardy perenniel for all I know. Does anyone have Stephen Hull's WES piece concerning Mabiie Todd's colour codes? I have done a search without any success. I know a few of them, but am a bit puzzled with a recent purchase. It is a Calligraph stamped 3250. Now 50 was always green (or at least I thought so) until this one arrived; it is brown. For example, I have a late 1920s/early 1930s 230/50; this is jade! 20 was dark blue, 30 was grey, 60 is black, 70 is light blue. A few more: 52 early is Lapis, later blue/black marble, 42 is blue marble, 45 grey marble, 53 blue/bronze marble, 58 marine bronze, 59 Italian marble, and 64 amber mist. And that is more or less the lot off the top of my head! My two "64s": Rgds Cob