Not some actual "hands on" progress on the movment today.
But some more good info collected!
Found this! It certainly clears a few things for me. So it is the same movment as the FHF 96. So I think I let it in this thread. For future rerference on this movment. Hopefully it helps some more ppl. (hope it is ok to share this)
Another pleasant news. Is HSL has offered to donate a spare movment.
Im humbled of his offer. I offered to pay something for it. But he galantly refuse!
Thank you HSL. It will defenetly help my skills move forward!
"Note: I recommend to not disassemble the barrel on the 6R15 movement, because a special material (SPRON 510) mainspring is used link, for which one would not find an exact replacement, and the barrel is sealed and lubricated for life. If there is any issue with the mainspring, replace the barrel complete."
any other watches have this special barrel? lasts how long 100 years?