As Eric said (and I hope he gets his others too!) these are a known set (T90). They certainly are rare but there are at least a few known near sets of 30. The single thing that probably makes these much harder to find for tobacco card collectors is the fact that the cards themselves are not marked "La Marquise" anywhere except the glassine envelope (much like the B- and L- tobacco premiums are often not marked).
-Rhett
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