I've collected the odd railway station totem along the line and they have been commercially made metal from DPS Screenprint. They've been purchased from the station shop but, being trade only, another source was needed just for a bit of fun.
I've used these folk to buy some of my old spotter stomping grounds/where I lived in some cases.
https://www.etsy.com/uk/listing/1282538345/personalised-train-sign-fridge-magnet-or

They are made from some form of plastic, do not have the 'grip' of the DPS ones and are larger (DPS on top of Etsy)



But, hey ho, like I say it's just a bit o' fun............

I wonder where Mrs B got this from? She likes it very much!