This coaster depicts the triple-headed dragon sigil of House Targaryen from the excellent first seven seasons of 'Game of Thrones'
(If you're printing one of these for yourself, prepare for long hours with tweezers, superglue and swearing....)
If you don't have a 3D Printer and you want one of these coasters please send me a DM and we can arrange for me to print one for you :)
Also check out my Etsy store - www.etsy.com/uk/shop/enterprisexddesign