Ok fellas, Its not often I am stumped. Not often at all.... In all my years of pretty serious exploring, I have never seen a cuckoo movement with a hair spring escapement. On first look, I dismissed it as retrofit, but on closer inspection, I think its legit!! In 20+ years of collecting and exploring I have never seen one. Signed GHS and with this set up. A & R on the front levers for advance, & retard, to tune the fly. WOW!!! Has anyone seen one like this before? (ALBRA??) Harold?... Steve?? Anyone seen a hairspring cuckoo motor?