You would like to know where you can sell a brown mink coat size 14?

You have a couple of options. Not really good ones because of the potential age and style of the coat and the color of the mink. All of these factors can "date" the coat and make it less desirable. If you have had the coat appraised recently you are aware that the value for mink is not what it used to be. So, with realistic expectations, choice #1, take it to a consignment store and let them try to sell it. Yes they take a chunk of the profit but you are not answering your ads or dealing with strangers or not getting paid. Choice #2, which I am surprised to endorse because of the great experience I had, put it on Graig's list. You can list for free and list only in your area. Take photo of coat to put with your ad. You may be surprised at the number of E-mail responses you get. You don't have to give your phone number or location until you feel comfortable with it. Make sure you are clear that it is a "cash and carry" sale. Take no checks. Worst that can happen is that no one wants the coat in which case you can donate it to a good cause!