This car is possibly an Amco, bodied by the Carrm Convertible Body Company of New York, USA. The Carrm (sometimes Carmm) Convertible Body Co. was a short-lived firm formed to exploit the patents of an Argentinian-born tailor turned inventor named Bazel Eli Carrm. Mr. Carrm was granted U.S. patents on the convertible body in 1918 and 1922. It seems only two prototypes were built, several years apart.
Here is an image from Floyd Clymer's Motor Scrapbook #6, copyright 1950 (pardon the fingertips):