Hey what year is that?Early Rotbart rebranded for Gillette, the same as 7 o'Clocks. It shaves exactly like an Old type.
The later variant had narrower corner teeth with cutouts for the cap corners.
The Rotbart version also came with a heavy (bigger) handle.
Raised Flat Bottom Question
Several have recommended the RFB British razor as one to get and use. I've seen one branded 7 o'clock, like the blade. Are these the same quality as others with Gillette brand? The reason I ask is because of the price difference. Thank you.www.badgerandblade.com
Hard to say, around 1931?