New member, looking for some advice.

[propelberry]

Hello,

I recently picked up an older pachinko machine at a thrift store. I've never touched one before in my life, and basically bought it as a display piece. I was trying to get it cleaned up, and I noticed that there's no locking mechanism on it. Does anyone know how to open this thing up? I can tell that the glass/plastic is seperating a bit, and want to fix it. I've attached a couple of images to help.