As I told my wife when we first met "sometimes you just have to take what you can get pet" 11 to 20 known i think i read, probably rarer that the 1903 open 3, so you may be quite correct in your statement John, one sold recently on ebay by alfnail, think it was AVF or less, went for 500-600 quid or there abouts, let us know when its on fleabay It's not mine Dave. It's in an auction. I agree with 49. Regardless of how rare it is I wouldn't touch that. & some of these "rareities" must be sitting in attics and grannies drawers and even collectors scrap tins.(as was proven on a thread here recently).