In WWII, how did Switzerland remain out of it?

You mean in current Swiss currency? Or even of the time? Cite for either claim?

Really? How does one distinguish ex-filling gold from freshly-mined gold or melted-down-inca-treasures gold?

Which Swiss coins would those be? As far as I can see they haven’t minted gold coins since 1930.

I recall reading that for a while during World War II, there were periods when Hitler stationed large forces in France near Geneva. (Geneva is within walking distance of France.) I also recall that during these periods, the Swiss essentially evacuated Geneva, leaving a small rearguard to mount a symbolic resistance in the event of a German attack.

From a purely terrain point of view, this would make sense. Geneva can be reached from France without crossing any high altitude passes. But directly beyond Geneva you’re trapped between Lac Léman and the mountains. Jura being the easier terrain (2,000 meters-ish), and Valais to the east is a bottleneck with 4,000+ meter peaks along both sides. Any Swiss defensive strategy would have to involve withdrawing from the vulnerable cities, and holding onto the more difficult terrain.

As for those Swiss coins, they sure don’t look like gold - but if they are, I’m rich !

They weren’t. They were expected, as a neutral, to also intern Axis airmen and POW’s. This they did not do. Thus, their “neutrality” is suspect.

snip

Dublin was bombed by the Luftwaffe a few times by mistake. The Germans subsequently apologised and paid compensation but there have been suspicions that the largest of these incidents may have been deliberate warning:

From wiki:

Now you’re speaking in hypotheticals. The male population of any country could immediately go active as guerillas.
The Swiss military defense plan, as it was explained by a Swiss citizen on a gun board I frequent, is that each male has a rifle and a rather small amount of ammunition in his home. The expectation is that in event of an invasion the reservists rendezvous, with their rifles, at predetermined spots where heavier arms, ammunition, and other equipment are stored. The minimal amount of state-issued ammo kept in the home is to allow the reservist to “fight his way” to the rendezvous point if necessary.
Once they have assembled, each unit has a pre-determined part to play in the national defensive plan.

Which is why the Nazis never seriously considered invading it. It was a listening post for allied spies, and it sold aluminum and electricity to the Germans. It was also a handy place for top Nazis to stash stolen paintings, cash, gold, and other stuff they plundered. Were theSwiss concerned about what they knew was going on (like the internment and mass killings of Jews and other minorities)? Probably-but they had no power to do anything about it. The Swiss rendered good service to they Allies-the Swiss Red Cross were allowed to inspect POW camps in Germany-and (at least) made the lives of Allied POWS easier (they coveyed mail and personal items).Face it, the Swiss were no worse than Spain, Sweden, or Portugal. They had absolutely no power over external events, and survived as best they could.

From what I’ve heard Hitler hated Switzerland. He apparently regarded it as a mongrel nation that had sapped the racial superiority of its ethnic German population. Occupying Switzerland and “fixing” it were definitely on his to-do list. But he had a lot of other plans that were a more immediate priority and he never got around to it.

As others have written, the Swiss did work with Germany during the war. They did not want a German victory because they realized that would be followed by an invasion. But they also didn’t want to get invaded during the war. So they tried to follow a middle path of appeasing Germany to keep it from invading them (or cutting off their access to outside food and fuel) while trying to give them as little as possible.

One thing the Swiss did was make themselves as unattractive a target as possible. Part of this was preparing to fight any invader and wage guerilla warfare if necessary. Another part was to mine all of the economic and transportation facilities in the country and make it clear they would blow up everything of value before it could be captured and used by any invader.