, and together, in england they set up siebe gorman, ltd.ed these. the diving helmets came in all sorts of different styles. this is the 12-bolt version, it's got 12 bolts to attach it to your suit. they also had 3-bolt versions, 6-, 8-, and so on. and they have acquired a sort of iconic status, really. any shop that sells nautical antiques, any nautical-themed restaurant has to have one of these. and because of that, it's put the price up to perhaps a figure which is more than they're actually worth. but also it's encouraged a huge number of facsimiles to be made. but this is the real thing. it's a late one, so it's a post-war one i would say, and as far as value is concerned you would be very unfortunate to get less than £3,000 for it and on a good day the market could push it up to £4,000 or £5,000. and what's great is to see a real one when one usually sees so many fakes, and also to have somebody who was just one handshake away from wearing it himself. thanks very much for bringing it in. thank you. so, your aunt was the collector of do