The self-adhesive stamps shown at the bottom of this page are among those with low catalogue values that are sure tough to come across. Grrr!!
I see in the Scott catalogue that these were sold in panes of 17 + label. I assume that means they were available from bank automatic teller machines, like some of those early US self-adhesives printed on plastic stamps in sheets of 18. Those have an awful long wait to come across them in random kiloware mixes too. We had the same idea up here in Canada, sheets of 18 stamps sized like paper money that were sold from bank machines (and are also real tough to come across). Grrr again!