For the model railroader who has everything

Ever try to buy something for a model rail, who, literally, seems to have at least one of everything? That must have been the thought behind the development of these, by the folks down at Lindsay Manufacturing. I’ve never seen anything like these, made by anyone else, and have seen very few of these. They’re fully functional, and strongly resemble others made by different companies, and I’m sure they would interact.
They’re sterling silver, and reminded me of those silver cuff links that stores used to sell.