The Antikamnia Chemical Company was one of those Saint Louis firms who produced provisional proprietary stamps. Two denominated versions are known. Henry Holcombe wrote, “It is said 500 of the 1/8 cent variety were used, very likely on samples, and 9,000 of the 2 1/2 cent stickers on boxes selling for $1 each”. He also conjectures that the ones without denomination may be proofs, and say that they are on white paper. His descriptions indicate that he may not have seen some of these stamps.