Bad pitting :( but this 175 year old tenon saw was a steal for £5. Before pics in comments. It seems to grab a little after sharpening/setting the teeth. It's not bad
Saws and Saw Files - Classic Hand Tools Limited
Lynx 12" Brass Backed Tenon Saw | Bill's Tool Store
The Joy of Wood: Saw sharpening... a balance between rake, fleam, and set.
Teething Troubles? Retoothing Your Tenon Saw - Paul Sellers' Blog