Following are discussions on the
Gibb Livingston & Co. Marking.

Harmon Fine 7th July.

Attached is a marking in violet that appears to be "GIBB" The G is 6 mm
while the other letters are 4.5 mm tall. The whole GIBB is 17 mm. It could
be Gibb Livingston. I couldn't find any other letter combination in Orsetti
& Pugh's list for GIBB. Any help?

Email from Philippe Orsetti 8th July
This is most certainly Group I  # 54 Gibb, Livingston & Co.
The height correspond, the recorded length was probably extrapolated and is
probably incorect.
 

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