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I believe C.T. Bingham took over the "Tally Ho" name after F.Fenney died...

Since you have a hollow ground razor, you've got a later razor (1880-1890) than a typical F.Fenney Tally ho (1850ish)

It is mostly just supply and demand.

If you search for straight razor on E-bay at any given time, you're gonna get about 900 legitimate auctions that aren't zeepk and stuff. 5 of those might be...