I've always found the round foil coin stamps of Fujeira, Bhutan, Burundi, Tonga, Jordan, Sierra Leone, Qatar, Oman, and Ajman (did I miss any countries?) from the 1960s and 1970s to be visually neat items. They're generally not terribly valuable, although complete mint sets are always saleable.
What you rarely see though, are new old stock still in original round box packaging, which is why I found this lot interesting. Some of the original boxes are empty, some are partials, and some are complete.
Not something you see every day...

