Button shows black text and an illustration of a blue biplane with red wings over a yellow background.
YANK JUNIOR AIRPLANE SERIES RELIANCE MFG CO CHICAGO ILL.
The Condor II biplane was a Curtiss-Wright model designed for varied transport. The "155" likely refers to its cruising speed. Models of the Condor II biplane include BT-32 (for bomber transport), AT-32 (air transport), and CT-32 (cargo transport). Some models were the first to offer convertible sleeping compartments and were used by the forerunners of American Airlines and Eastern Airlines. Some were used by civilian and military operators in the United Kingdom, China, and other countries. Admiral Richard E. Byrd used a specially equipped model in his 1933 Antarctic expedition.
This button is part of a larger set of 20 buttons, each with an illustration of a different airplane. They were originally given away by Yank Junior clothing with purchases.