You have more faith in me than I have, Mikael! I have seen the mark before, but Paragon is just a brand and I suspect many things had it emblazoned on them as it means "excellence" and so on. Interestingly, the old greek word for it meand "sharpen" and part of the root of that word is "whetstone" which is particularly apt!
The only company I can think of that used the name Paragon was henry Sears and Son, an american importer in the late 1860s - 1870s (company name was bought in 1878 and continued trading until1959) - they made a huge variety of knives and razors. However, they were importers, so the razors they sold could well have come from Sheffield and Solingen.
I agree with Mikael about the shape - typical old Sheffield - and if it was a Sears & Son they invariably stamped the name and the year (1865 - the company was originally Henry Sears & Co at that date, Chicago, but was bought and the name changed) somewhere on the tang, so I suspect it is a Sheffield blade. The scales look like ivory to me - the veining is unlike bone and bone has lots of little dark specks in it, mostly at top and bottom of the scales (the remains of minute canals that nerves and so on once passed through - the dark residue is the collapse and decay of organic matter and dirt that has entered the pores).
Regards,
Neil