For your consideration is a Holland Sport Fly Reel Case made in America. The interior is lined with wool. Appears the clamshell case accommodates up to a 3 1/2" diameter reel. The interior dimensions from where the case hinges to the opposite side are 3 1/2". The longer dimension, or width, is 4 1/4". Holland Sport leatherwork is of high quality using substantial leather. The leather does have a few surface scuffs. You don't see many of these cases around.
Model: Holland Sport of America
Depth: ID approx. 3 1/2"
Width: ID approx. 4 1/4"