Keywords: 1970 stamp of Yemen Becker, Keller.jpg Erhard Keller Ingrid Becker http //colnect com/en/stamps/stamp/444298-Becker_Keller_Emblems_of_Sapporo_and_Munich-German_Olympic_champions-Yemen_Arab_Republic 1970 author Commons Stamps/Public domain templates PD-Yemen Stamps of Yemen 1970 Erhard Keller on stamps Ingrid Becker |