Oh, that is exciting for you Stefan and certainly looks like 'Gloria Mundi'. Apparently there used to be huge numbers of double cultivars, often with contrasting coloured 'eyes'.
Thank you for the memory jog of old threads Axel, very interesting. And I was really interested to see your bulbs forming on the stem. I'd just bought a copy of Geoff Stebbing's Spring Bulbs (Batsford, 2005) for the chapters on Hyacinths and he speculated that they may form bulblets on leaf cuttings like Lachenalia, so I was going to give that a go but I may keep some flowers I've cut to see what happens with them...