![Specimen #4163, Gum Bichromate, 7"X5"](https://cdn.myportfolio.com/290dbd07-bad5-491b-9974-5f5f66d3c0d7/bbe95c54-dd06-4729-95fb-7c6e3bfa9acb_rw_1920.jpg?h=dadb12570a403ce70c6ba8958b8b9b3b)
Specimen #4163, Gum Bichromate, 7"X5"
![Specimen #3718, Gum Bichromate, 7"X5"](https://cdn.myportfolio.com/290dbd07-bad5-491b-9974-5f5f66d3c0d7/54392892-4078-4993-944a-426ca6f8d924_rw_1920.jpg?h=857b0b445db925f20374d131cebb9ad7)
Specimen #3718, Gum Bichromate, 7"X5"
![Specimen #2454, Gum Bichromate, 7"X5"](https://cdn.myportfolio.com/290dbd07-bad5-491b-9974-5f5f66d3c0d7/bd35e85f-94b6-4500-8692-2795ca21e241_rw_1920.jpg?h=33fdc64c86c9291f0cd6d3da63bc79d7)
Specimen #2454, Gum Bichromate, 7"X5"
![Specimen #3382, Gum Bichromate, 7"X5"](https://cdn.myportfolio.com/290dbd07-bad5-491b-9974-5f5f66d3c0d7/80b1a53e-430e-47de-be12-7c2b283dfd5a_rw_1920.jpg?h=9cf92247253c911e6c3e3448b83279d0)
Specimen #3382, Gum Bichromate, 7"X5"
![Specimen #1451, Gum Bichromate, 7"X5"](https://cdn.myportfolio.com/290dbd07-bad5-491b-9974-5f5f66d3c0d7/41b5e10f-bf24-47eb-bb20-caadfb5ce971_rw_1920.jpg?h=11dc808a51eeea6f120d9b42fc4f8374)
Specimen #1451, Gum Bichromate, 7"X5"
![Specimen #6478, Gum Bichromate, 7"X5"](https://cdn.myportfolio.com/290dbd07-bad5-491b-9974-5f5f66d3c0d7/e786ad28-1f8f-4457-a57e-f4790027e2e9_rw_1920.jpg?h=15bd6d7b5adc3ea0412967ccf36d81bc)
Specimen #6478, Gum Bichromate, 7"X5"
![Specimen #3490, Gum Bichromate, 7"X5"](https://cdn.myportfolio.com/290dbd07-bad5-491b-9974-5f5f66d3c0d7/593c3a8c-29da-40ce-afd4-6e7d762af8bf_rw_1920.jpg?h=781ba9461e2a5208918914c94b7b4fb9)
Specimen #3490, Gum Bichromate, 7"X5"
![Specimen #6543, Gum Bichromate, 7"X5"](https://cdn.myportfolio.com/290dbd07-bad5-491b-9974-5f5f66d3c0d7/fa6dda57-b7ff-4d1f-9ebe-1b4cc72f9e7a_rw_1920.jpg?h=189882d65da181b05f7469aa716708c5)
Specimen #6543, Gum Bichromate, 7"X5"
![Specimen #6734, Gum Bichromate, 7"X5"](https://cdn.myportfolio.com/290dbd07-bad5-491b-9974-5f5f66d3c0d7/1e9b8630-4d0d-40fb-8914-d518134f606d_rw_1920.jpg?h=68e23ee4e58efacb0801dced7fd86205)
Specimen #6734, Gum Bichromate, 7"X5"
![Specimen #1284, Gum Bichromate, 7"X5"](https://cdn.myportfolio.com/290dbd07-bad5-491b-9974-5f5f66d3c0d7/f4d28c46-cf2e-44f4-bf01-7a859af75d32_rw_1920.jpg?h=ef7313dfabe544057322e79e2c93af49)
Specimen #1284, Gum Bichromate, 7"X5"
![Specimen #4500, Gum Bichromate, 7"X5"](https://cdn.myportfolio.com/290dbd07-bad5-491b-9974-5f5f66d3c0d7/0c5ce889-0f1c-4bdb-ad86-a92cf27232da_rw_1920.jpg?h=9b95bce14f55df7f89b8379cdab08736)
Specimen #4500, Gum Bichromate, 7"X5"
![Specimen #4679, Gum Bichromate, 7"X5"](https://cdn.myportfolio.com/290dbd07-bad5-491b-9974-5f5f66d3c0d7/4fe1536e-0568-47e5-a34a-c1367a262c96_rw_1920.jpg?h=83e88be88976c104eb10207becceb238)
Specimen #4679, Gum Bichromate, 7"X5"
![Specimen #3781, Gum Bichromate, 7"X5"](https://cdn.myportfolio.com/290dbd07-bad5-491b-9974-5f5f66d3c0d7/2f3c7f7d-8642-4bb8-9722-151bd9edd3c9_rw_1920.jpg?h=9f3dff2725aa81c2c580a39e14493f18)