Need More Information About This 30 Cent Franklin Orange Specimen Stamp

Hi


Can anyone fill me in on some information about this stamp since having difficulty finding any .



Greatly appreciated

Thanks

Try this, info on the 30c specimen issue.('m not saying yours is71SB)

https://usspecimenstamps.wordpress....2%a2-orange/

They are listed and valued in the Scott Catalogue. Scott 71 with a type B "Specimen" overprint has a current catalogue value of $200. That would be for a stamp with gum. In the late 19th century the overprint was placed on stamps given to other UPU members as samples of stamps that could be on incoming mail. In the mid-19th century the overprint could be used to invalidate the stamp for postal purposes, but allow someone to see the quality of printing.