The only tell tell factor left would be the symbol & the end of the word Stanton (which I don't see on the 661 or 881).
There's a number lightly scratched into the cartridge body, looks like 917 or maybe L917. Could mean something.
John
No doubt a 68x series cartridge. On the side of the stylus on the pic is the Stanton name. I'm thinking there should be a number on the other side of the stylus that might provide more info about the stylus.

I think that it is original stylus but not 100% sure.Tag on top is black with silver stanton.
Thanks
If that is the original stylus then it's a 681EE plus the bodies are a tiny bit different with the ee's vs the eee's
Plus if the Stanton tag on top of the body is black then as i said it's a ee
Did you ever try taking the stylus off to look underneath it? My 681 has a tag on its body underneath the stylus assembly.