I don't see a removable stylus ass'y? I think you have a moving coil cartridge there? I would search the number- it may be fairly valuable?I have some kinda signet cart from the 80s laying around, doesn't have a stylus at all... wonder if its the kind where the end user (me) can install new ones or is that a pro thing or juice not worth the squeeze?
Here, just grabbed it:
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