Hi, althought from the US, my wife and I visited London a few years ago. It peaked my interest in bobby helmets so I collected a ball top, coxcomb and rose helmet. At that time I found a website that showed a reference for the counties and what type helmet they used ( coxcomb, rose, or ball top) and also which was the proper band (black, silver, etc). I have tried and tried, but can't find it back...maybe it has been removed since that time. There are so many helmets for sale on the internet that are assembled from different pieces, I found that reference invaluable. Does any one know of another source to reference the above. Glad to belong to your Club. Thanks, Oliver