I hate to go on a tangent but as a pilot I must fill you in on the fact that Russia makes plenty of its own aircraft and flies them, as does China at COMAC. Canada and Brazil, Switzerland, Sweden and Italy also make commercial aircraft, and the list can go on. Airbus is starting to make airplanes in the US (Alabama) also, and has a license plant for A320 in China. Boeing makes aircraft in Wichita, kansas, and South Carolina for example.
So it can be as "complicated" as your coin question!
Many of the Euro coins are made in each country's home mint.
Plenty of things are outsourced and not always in the mainstream knowledge base. Texas makes license plates for El Salvador and several other countries for example.
In addition to coins, banknotes are very often made by private companies, like Thomas de la Rue, who makes for many, many states.
Good topic to discuss, thanks for posting.