Want to sell ancient coins..

Hello, so I ve been collecting some ancient and old coins since past 6 years, now I have decided to sell *some* of my coins. I went to Google and searched up some places and all seemed shady. Does anyone here know where can I sell them ? Like a proper physical shop who knows the coin's worth and can offer a good deal.. Some of you might say auctions in Mumbai but the thing is that I have never been to an auction, never saw one too... So it would be kinda difficult for me to opt of auctions .