I did a DD using the two Salamader razors (1920-26) in my collection. One is a wedge grind while the other more hollow ground. These are not highly collectable, but you won't see many posted for sale or in good shape. The hollow ground Salamander is not often seen by me.
I honed the Our Wedge type last night after receiving. I started with 30 Mu films and progressed to 12 and then 9 Mu. I then went to a Coticule stone with slurry to clear under running water followed by the same with a Thuringian stone. This progression was followed by stropping on diamond paste on a piece of balsa wood board. I used an old Illinois #50 hanging strop of 25 on the linen and 60 on horse hide.