Hey guys...new to the forum - just bought a couple of jungle records I found in dusty stacks at a record store in Amsterdam. When I came home I quickly realised that one had some special mark on it. It wasn't a label or a catalogue number, so i figured 'what if it's some kind of an autograph'... I don't know who to turn to, forums feel like my only shot right now.. If anyone has any suggestions on who to turn to or knows what it is, please help Thanks!