To Bundt, or not to Bundt

Why is it that when I walk into a resale shop and lay eyes on something that I've never seen before, I immediately decide that I have to start collecting them?

That was the case with these gelatin molds.

I can't wait to use them to make little individual bundt cakes. When's National Bundt Day again?

But I'm not entirely sure I can use these to bake. Again, Google tells me I shouldn't be using Google to answer questions like this. I know better than that.

I'll throw it out there - does anyone know how I can find out if it's safe to bake with these molds?