I recently bought a mini collection of straight razors and can not find information about a couple. Has anyone heard of a "pr \dat-brun" blade with a symbol of a shaving brush underneath? It is probably one of the best quality blades in the group.

Also have a "King Razor Mfg" king's barber supply special

20th Century Mfg Chicago

Caschmiso Solingen blade

these are some I can not find much on.

Thanks