Andy, Would you believe that there was nothing sinister about the act of Leaving $170 and his wedding band in the tea cup?
What would it take to convince you that IF ( I ask IF??) Lee actually left the items there that it may have been the act of an intel agent who knew that he was embarking on a very dangerous mission ....One in which he might not return.
IF that was the case I would expect to find evidence a) that Oswald had the qualities that an agency engaged in covert intelligence gathering would be seeking, and 2) that he was actually working for such an agency and being paid. So far, I haven't found any such evidence..