My wife ran into the Bloomington, Indiana post office to pick mail up from our box and purchase a strip of 20 stamps for use on routine first class mail. Twenty minuets later she cam back to the car frustrated with the whole experience.
The window clerk clearly stated, "we do not have a forever stamp". He pulled out examples of what he had in his drawer and told her to pick the one she wanted. Yep, every one was marked "FOREVER / USA".