Three-seat amphibious flying boat designed by Gilbert Trimmer. Rights were acquired by Commonwealth Aircraft from Kansas which produced one C-170 Trimmer with more powerful engines, NX41999 / NC41999. That airframe was eventually bought by Cornelius Biemond and then called the Biemond CB-1 Teal. This one can just be identified as the original prototype, NX41853. Photo by: Rudy Arnold / Smithsonian Institution