Haven't seen this one before I don't know what could cause this besides too much heat perhaps. What caught my eye is the the other eye of the silhouette is going to silver circle that sticks out pretty good I can use my microscope and get a better picture if it's worth doing let me know. Back side looks normal.
A little dive I eat at occasionally for breakfast still has unlimited $0.25 coffee with the purchase of a meal every sat. and Sunday until 1:00 pm. Not watered down, but good coffee.
Whatever stained this picked up the design and it travelled creating what you see, before it dried out.
That business is smart. They use coffee as a list leader to get you in the restaurant. Once in you order food and that’s where they make the real money.
In the small town where my antique shop is there is a restaurant owner that does just this. It’s been used since before my time and will be used long after I’ve departed this world. They are called lost leaders. Not just in restaurants but in all types of stores. They have to take a loss on something just to get you in the store. The thing is, this restaurant owner has been offered $2.5 million for his property and he refuses to sell.
Actually it's "loss leader". Sorry, I just had to. I worked in retail when I was very young. That's the stuff on the end caps a lot of times.
My new phone, a replacement for the one that gave up the ghost, is a pain. It’s the exact same phone but it’s a replacement that was somewhat repaired I think. I catch a lot but not everything. I see you are familiar with the term and the way to merchandise it.