Thanks for the offer, Bruce. I will keep it in mind.
It would not surprise me in the least if I have actually sat on one for lunch years ago while visiting any one of three popular surplus dealers out this way. All three had loads of 19-Set bits (the main attraction back then) with other wireless items I was not that familiar with. Did pick up an Antennae Tuning Unit from one of them and had it gathering dust in the basement for 10 years or more before learning what it was. One of the joys of the pre-computer era. Then kept it another 10 years before giving it away as the odds of being able to focus on a 52-Set were pretty remote.
David