Hello everyone. I am a beginner collector that started from inheriting a stamp collection. I have this one stamp unlike the rest and I have no idea what its considered or what it means. Is it a precancel? Or am I far off on my guess? I've attached a photo of front and back of stamp incase it helps seeing the front to identify it. The symbol made by punching holes in it is what Im curious about mainly but I greatly appreciate any help or info anyone has. Thank you!