David Swearingen wrote:VERY good find; that's the oldest Junkunc/American I've ever seen with a restricted keyway.
What makes you think this is a restricted keyway??
The standard keyway has only a single V-shaped groove. There are three restricted keyways, all pretty rare, which have a second groove opposite the first. Ordinary American keys will not enter the restricted keyways without the proper groove. There is also a fourth restricted keyway, with a square groove, not much different from the Chicago double bitted keys.
Behind every successful man, there is a woman...telling him he's wrong.