I've been backing up the truck! Not a time to sell for me at all. IMHO If you can resist dipping into your 15 gold coins I would do so. If you really, Really, really need to sell then go for it but explore your options. None of us have a crystal ball but for me I am in it for the long run and I do not put myself in a situation where I will actually need the money from selling my PM's.
Strong dollar mostly making metals look cheap. I am buying a few ounces of gold today, as a dealer I know who uses me to quickly move US gold coins is selling me a 2 each double eagles and eagles at melt he just got. PM being out of favor and strong USD is a decent time to slowly accumulate and build your SDB IMHO.
I am never influenced by precious metal prices when buying or selling a collectible coin. Good quality coins hold there own regardless of market trends. I look at bullion both gold and silver as investment hedges only.