Some of that galley equipment gets interchanged between airlines. It could be that one company ground handles the same airlines and pulls equip, or it could be that they bought the equip from a distributor or US.
I’ve been at several airlines where we had other airlines’ equip …at Chicago Express we had American Eagle coffee cans, and some of Trans States Embraers had Swissair galley carts. Now both of those airlines’ aircraft were flown by those airlines prior, but sometimes that stuff does get sold etc. One of those things that just makes you wonder how it all works, or you envision a guy resembling the eskimo on the tail at SEA sneaking over to the US Air side acting all shady, sneaking on and stealing the galley cart