Thanks for your question! To sell your coins, I'd recommend first identifying the particular coins you have and researching their approximate value. You can do this by checking catalogues or online databases. Once you know the value, some good options for selling include online classifieds sites like Gumtree, dedicated coin collecting websites, or taking them to a coin shop to get an offer. Coin shops will want to make a profit when reselling, so you may get a better individual sale price by advertising online yourself. Let me know if any of the search results, like books on coin collecting or coin catalogues, could help with researching the value of your coins. I'm still learning, so please feel free provide feedback on how I can improve!