As Remington was spinning off excess capacity and debt after the wartime contracts of WW-I were cancelled, so they formed a new corporation in 1920, Remington Arms Co., Inc. and a couple months later the old corporation, The Remington Arms Union Metallic Cartridge Co., Inc., was dissolved. The Model 17 was introduced in the first Remington Arms Co., Inc. catalog which was late 1920/early 1921.

- Model 17 Catalog No. 51 pg 25.JPG (120.98 KiB) Viewed 6014 times

- Model 17 Catalog No. 51 pg 26.JPG (125.94 KiB) Viewed 6014 times
They must have been already working on them for a while as we see the barrels marked The Remington Arms Union Metallic Cartridge Co., Inc. into the 28xxx serial number range.

- 14837 02 The Remington Arms Union Metallic Cartridge Co., Inc..jpg (108.73 KiB) Viewed 6014 times
Your gun 6019 would certainly be an early one from 1920/1. Unfortunately, the first page of Model 17 production is missing from the old factory ledger. Page 2 starts with serial number 35637 as the highest serial number receiver put in work by January 19, 1926.