Here's my not-very-educated guess at its age. The razor hasn't arrived yet, so I'll have to go by the ebay pics:

The obvious: John Barber, 1810-1834


The profile shot shows a slight shoulder and slightly curved scales, which I would say place this guy around 1810-1820.

I would really be interested in what some of the experts on the old razors have to say about this one.