Aye, Prue. I was just going to guess 50 to 60 when I had a warning someone else had posted. I tend toward the younger age since upkeep of that "stash" would take time an older gentleman might be less likely to want to dedicate.
Anne, does your Evans family have any connection (through marriage, etc.) to Scandinavia or Germany, or thereabouts? The reason I ask is that the collar and "neck sash" remind me of some photos I've seen from this era in those regions. Just a wild conjecture for your consideration.
Nick