The hidden message in this (and all similar requests) on this and other platforms. I want maximum dollars for my precious, and I don't want any cost of selling.
If you are worried about scam artists conning you dump the problem off on a professional service and accept that they will only pay you a portion of the sales price. That is their profit PLUS covering the various risks involved.
If you can't get buyers because they don't trust you, the same answer applies.
There are modifications of these answers, such as offering to pay insurance or demanding local, cash, face to face sales but they all have various costs (money, time, inconvenience, smaller market etc.).
My own experience is that scams, while not rare, are not terribly common. I have sold literally hundreds of items with no scam buyers, but I do know several people who have encountered single instances of this. Perhaps you are over worrying the situation.
TAANSTAAFL