So I bought a 1904 Merkur OpenComb, which I have been told is the same head as the Barber Pole HD 38C (hopefully that person is right). I want to buy now a Merkur HD and I was thinking of buying the SlantBar version 39C since like this I will hopefully have 2 different heads and 2 different bodies. My questions is the following: Can I use the Open Comb head say on the 39C body and vice versa? if not, I might consider buying a HD 38C (open comb) instead. Thanks for your replies.