Need a bit of historical help. I have a leather carry bag marked Ed Robinson...on the flap it says porters hand stamps. There are many vintage tools but there is an interesting ornate roll of leather with a great number of larger (saddle sized) hand stamps that are hand made but have such fine detail...finer than Hackbarths. The knurling isn't always complete and there is no mark other than a file mark on each tool. I can't find anything on Ed Robinson though I believe he worked in Porters saddle shop. I know Frank Eberle made tools for Porter but I believe his were marked.
I'll post photos if desired but any leads would be appreciated.