Scott 1107 Rosecraft first cachet??
To the FDC experts!
As part of a large dealer lot that I purchased, there was about 20 copies of the Scott 1107 Rosecraft International Geophysical Year (May 31 1958) FDC. The dealer had indicated that it was Rosecraft 1st cachet and I see several folks have the same cover on sale on this site advertised as a 1st cachet.
Rosecraft was a Canadian company and first switched name from JCR to Rosecraft for the Canadian Scott 373 in September 5th 1957. (documented in January 1995 First Days magazine )
My question is, is the "1st" referring to a 1st Rosecraft cachet for a USA stamp and is that normal?