Maybe i really should just abandon Manual winding and go Longines,
BTW a good pre-owned moonwatch, how much should i prepare for it, 10k?
It all depends on the condition of the watch, and whether if it comes with full box and papers. There are many different variations of the moon watch. The latest iterations are the 3573 and 3570, the 3573 is the sapphire version with a see through caseback while the 3570 is the purist version with the hesalite glass and solid caseback.
Older versions are equipped with the 861 and 863 movements while even older versions (per-moon, without the professional prefix) are using caliber 321 which are column wheel based chronograph movements.
The newer 1861, 1863, 861, 863 movements are using a cam based chronograph.
Most desirable is the caliber 321 but those wil set you back USD$10k plus for an all original version.
The Speedmaster 3572 is also very collectible and it features a hesalite glass front and a sapphire see thorough caseback. It is running on the non-rhodium plated but highly decorated 863 movement without the plastic delrin brake.
RM10k should be enough if you shop around carefully enough and be a bit more patient. But as always, buy the seller and not the watch. Our forums here have a lot of very reputable sellers. I strongly suggest that you buy from one of the official sellers here on MWF.