New Improved Aristocrat type, but in silver?

[amishmotorboat]

The knurling on the knob looks like the Aristocrat, but what is this called in silver?
http://cgi.ebay.com/Vintage-Barber-Shaving-Set-/230584091652

 

[smd123]

I'm nowhere near being an expert in razor ID, but I think this looking like a bostonian (circa 1920-1930) that I saw in a PIF on open combs earlier

 

[amishmotorboat]

The Bostonian has different knurling on the knob than on the handle.
This appears to have the diamond pattern on both the handle and knob.

 

[mr-razor]

the early 20s catalog shows all razors with this knob. The Aristocrat comes only gold plated.