How do I need to find someone to price & sell my valuable Antiques, Glassware and collectibles for me?

I have a large total of STUFF I need to get rid of. LOTS of china cups and saucers, glassware, a collection of OLD TIN BOXES (tobacco,coffee tins) old perfume bottles, minature ceramic hinged boxes,old blank prestamped postage postcards,(1 cent 3 cent etc.) stamp collection, old milk bottles,old keys, old medicine bottles and tins, old scales, collection of old glass doorknobs, etc. etc. STUFF like that! my Husbands LATE wife gathered everything! I have no interest in that, AND have no desire to keep or dust these items., and have neither the time or $ to determine what is priceless and what is not! I'm sure SOME is of it is, and some is PROBABLY just junk! BUT I don't know how to tell the difference. I've tried going on line, checking out e-bay, buying oldfashioned books, it's all too confusing! I need Someone KNOWLEDGEABLE about these things to come to my house,,sort it,document it, take it away, price it, and SELL it! W/O taking vantage of my ignorance and ripping me off. CAN YOU PLEASE ADVISE ME?