I use to put it (IWC port perp) on a watch winder (Kubik) in the safe (safe at the bank has to be big enough though) otherwise it would have been too much hassle for me.
I use to put it (IWC port perp) on a watch winder (Kubik) in the safe (safe at the bank has to be big enough though) otherwise it would have been too much hassle for me.