This was given to me by a friend known as Barny. It's very old. The original owner bought a new Gillette Single Ring razor in 1916. A tiny brush which performs well. I put it here to remind you that there may be some old brushes in your family vaults that are worth trying. It's too small for me for regular use. The sort of thing to chuck in a travel bag.
The internet wasn't even imagined when this little brush was made.