Metal Vintage Postcards from Zurich?

Description

Metal Vintage Postcards from Zurich? Condition is New. Shipped with USPS First Class Package or Priority Mail.
Found these in a box at an estate sale. Plastic bag they were in tore when I pulled them out to photograph them. Don't know how old they are, but look like souvenirs from a trip. They are 4x6" in size, envelopes and some mounting hooks are included. They have a postcard type paper overlay on them, but they are so old, they are wanting to come off the metal.
These are unique and suitable for open display or hanging on a wall somewhere.