I agree that the ring/money thing on it's own could not convict Oswald. Pretty sure that no LNer is claiming that. Go ahead and continue to try and make it look like we are. You are only making yourself look the fool.
Why bring up conjecture like this at all instead of discussing what you think constitutes
real evidence. Because it's all conjecture?
Speaking of looking the fool, Bugliosi did try to claim that every individual piece of his "evidence" (yes, including the ring in a cup) was sufficient to convict Oswald. Do you disagree?