Wonderful Iran image fifia, thanks! (I save images also as hex-shaped stamps are so few and far between).
I started a thread a couple years ago on them here:
Wonderfully odd-shaped hexagonal stamps and cancelshttp://goscf.com/t/6830
but new stamps and images are welcome wherever they happen to appear!
I even went so far as to start to collect (not realising the vastness of the topic) hexagons-on-stamps, topic here:
Odd Shapes ON stamps (including hexagons)http://goscf.com/t/8358
and one on Bees (hexagonal honeycomb, don't you know!) here:
Buzzy Busy Bees - Honey Bee, Beekeeping, Hexagon Honeycombshttp://goscf.com/t/14223
Unfortunately my collecting has slowed down to a crawl lately.