The Sikorsky S-43 first flew in 1935 and was often called the "Baby Clipper", after it's larger Pan Am big sister, the S-42. Various seating arrangements were available accommodating between 18 and 25 passengers, with a separate two-crew cockpit forward.
On April 14, 1936, an S-43 with a 500 kilograms (1,100 lb) payload, piloted by Boris Sergievsky, set an altitude record for amphibious aircraft when it reached an altitude of 27,950 feet above Stamford, Connecticut. Also aboard was designer Igor Sikorsky. (Wiki)
This is the in-flight version of the model with the undercarriage up. An "undercarriage down" version is available here. And the JRS-1, the heavily militarized version of the S-43 is available here.
"53 S-43/JRS-1 "Baby Clippers" were produced (31 civil, 15 Navy, 2 Marine, and 5 USAAC)...... 10 of the Navy's JRS-1s were at Pearl Harbor on December 7th, all survived the attack and one, BuNo 1063, is undergoing restoration at the Smithsonian today. Two civil S-43s have also survived, one originally owned by Howard Hughes and one at the Pima Air and Space Museum (painted as a Marine JRS-1)."
...from "Sikorsky S-43/JRS-1 Amphibian" by Steve Ginter (ISBN:0996825851)WS&F Special Note: Unfortunately some of the rugged detail of the S-43 does not print well on this model in the Strong & Flexible plastics and so I am not offering these materials as an option.