A guy could make some decent money if he built the one for the TC Seneca/Cherokee 7196 I believe is the number? Maybe 97? I have 2 of them for my .36 Seneca’s and feel fortunate about it. The one for the Seneca/Cherokee is the Rarest of them, SUPER Hard to find, and they bring a premium if you do find one, I watched out for them for about 3 years, in that time I have only seen 2-3 of them, and they sold for 200-250 Bucks.
I much prefer my Lyman’s And Williams for their Field Adjustability, The TC Peeps are a Sleeker Fit, And work just fine for the Guy that wants to Zero at a Certain yardage and Lock the Sight Down, The TC Peeps are not Field adjustable