Postcard of Subject to Flooding, Iron Knob, - South Australia - Australian Postcard - Vintage 1970s. This delightful postcard features the Subject to Flooding, - I didn't know fishes could fly dear ! Comical Postcard. Iron Knob - South Australia is in good condition. No Writing on back so is still in Good Condition. Measures - 5 1/2 inches x 3 1/2 inches (14 cm x 9 cm). The card could be used for decoupage, art, craft, collage, paper ephemera, or maybe you just want to remember when you visited this place. I have lots of other vintage knitting and crochet and sewing patterns and children's books listed so please have a browse around the shop jennylouvintage.etsy.com or visit my other shop jennylouandpatsytoo.etsy.com for great knitted tea cosies, jumpers, hats, scarves etc.