In my thrifting, I somehow managed to find just that--a muffin tin! I found that it was marked Ovenex, a popular company that made baking pans that I believe is still in business under the Ecko name. That led me to do a little more research and I found that this type of pan is commonly called sunburst or starburst.
Since then, I've been able to expand my collection. I try to only buy pieces when they are nice and shiny and not rusty. That fluted pan from yesterday was an exception--it has some rust but is still mostly shiny.
In all, I have found the following pieces: two heart-shaped cake pans, a fluted pan, a fluted pan with a hole in the middle, a muffin tin, two different size loaf pans, a pie tin with a fluted edge, two regular round cake pans and two round cake pans with a release arm. The two fluted pans are my favorites!
I'd love to find an extra-long loaf pan like Sarah has, or a big cookie sheet like this one currently for sale on eBay. Wouldn't that look neat hanging on a wall as a magnet board?
If you are a reseller, these pans do sell, especially the larger or more unusual sizes (check out this completed auction!) and especially if they are in good condition (shiny, no rust) because as far as I know, there isn't a good way to clean them. Ovenex also made bakeware in another pattern that looks like a waffleweave, but I don't think it's as desirable as the starburst pans unless it's really shiny and like new.