It's a Shermack coil (I did not try to verify catalog number). Listings for private coils are found in the Scott US Specialized Catalogue.
More information here
http://stampsmarter.com/1847usa/PrivatePerfs.html
Don
shamrock
shermack
one could easily see the confusion
Thank you. I found VENDING & AFFIXING MACHINE PERFORATIONS in the Specialized Cat.
I have the stamp shown that a Dealer labeled "#406 Type III Shamrock". Huh? Maybe it's just getting late in the day, but this baffles me. Thank you.
re: 2 cent Washington
It's a Shermack coil (I did not try to verify catalog number). Listings for private coils are found in the Scott US Specialized Catalogue.
re: 2 cent Washington
More information here
http://stampsmarter.com/1847usa/PrivatePerfs.html
Don
re: 2 cent Washington
shamrock
shermack
one could easily see the confusion
re: 2 cent Washington
Thank you. I found VENDING & AFFIXING MACHINE PERFORATIONS in the Specialized Cat.