Someone on here mentioned finding an old paper tag glued inside thier machine and it reminded me I finally made sense of the one in my dryer a couple years back. These tags are more useful than people think. That sticker usally has the model and serial numbers stamped on it, sometimes with a stock or catalog number from the store that sold it. Once you copy those numbers down, you can punch them into the manufacturer's parts lookup and figure out the exact production date, which matters alot when you're hunting for a discontinued part like a drum roller or belt. One tip I wish I'd known sooner: take a clear photo of the tag before it peels off or fades. The adhesive on those old ones dries out and the paper gets brittle, and mine basicly crumbled the second I touched it. A photo saves you the headache. Also check inside the door frame or on the back panel for the official metal data plate, since that's the more reliable source if the paper tag numbers don't match anything in the lookup.
If the tag is from a defunct department store, that part doesn't really matter. The manufacturer's model number is what parts suppliers go by, not the retailer. I spent weeks thinking I had some mystery machine before I realized the store brand on the sticker was just a rebrand of a common model. Saved myself a bunch of digging once that clicked.