The Difference between the FN Browning Model 1905 and Baby Browning

The Model 1905 is often referred to as the Model 1906, generally in the U.S. it is known for its first patent year "1905" while in Europe, 1906 refers to FN's first manufacturing year. This model is also commonly known as the Vest Pocket model. The Baby Browning was introduced by FN in 1931, the pistol is smaller than the Vest Pocket model. The Baby Browning is a total different design from the earlier Vest Pocket pistol, parts are not interchangeable.