Well, I did find my sight along with some good news & some bad. The bad news is that now, one of the level holder plugs has gone "walkabout" somehow so besides having to try to fix the adjustment screw, I now need to manufacture a plug. The plug will be easy , common 6mmx1mm thread appears to match...its that damn screw that continues to be a problem. For your info Re3liever, mine mike's out at 2.42 mm O.D. so could be 2.5 mm metric or #4 machine screw size with 40-48 threads. I'm having trouble determining thread count with a thread gauge...their so damn fine and along with cheap thread gauge & old eyes... I will have to make/devise some method to physically count treads over a given distance to tell for sure.
The "good" from yesterday is that while looking for the front sight , I found five Lyman/Marbles type tang sights & 2 long range Vernier's that I had forgot I had... old memory failure this time... that all need rifles attached to them... sure wish gunshows would come back...