‘Gold I Gave For Iron’ was one of the original campaign slogans – such as ‘Gold gab ich zur Wehr, Eisen nahm ich zur Ehr’ (Gold I gave for protection, iron I took as honor) – during the 1WW. People of the German state were asked to donate their gold for war material and to support families in need. As a thank you they received iron rings, brooches or medals such as below examples.
But already Princess Marianne van Prussia asked the population during the war between Napoleon and the Prussians to support the state with their gold. In exchange they received an inscribed brooch or ring.