For sale here is an Otto Zwarg Model 400 Laurentian salmon fly reel in the 4/0 size. Made in St. Petersburg. Serial number G 9. This one is in excellent++ condition and all original. Zwarg reels were first made in Brooklyn, before moving to St. Petersburg, FL where the bulk of his reels were made. As head of reel making for vom Hofe, Zwarg worked with the world class fisherman who followed him when he was granted the right to make the vom Hofe style reels under his own name. Only Zwarg made his reels even tougher. If you weigh vom Hofe and Zwarg reels of the same size, you will find the Zwargs are slightly heavier, owing to Zwarg's use of heavier internal gearing and braking.
If you are looking for other Zwarg reels, let me know, as there are more available for sale.