I have had the Ivory celluloid Wolstenholm "Peerless" 5/8 square point for some time. It is a great shaver and a nice looking razor. I came close to selling this when I saw the black round tip come up on eBay. I Bought the razor and brought these 2 together. I sharpened the round tip (which took off the black spot you see in the pic) and shaved with it last night. Same great shave.
http://straightrazorpalace.com/attac...p-pict0308.jpg
The pics aren't great, but I was in a hurry to get that round tip honed and try 'em out.
http://straightrazorpalace.com/attac...p-pict0310.jpg
I think they belong together.