Where can I sell my RSR?

I'm an avid cryptocurrency investor and have been keeping a close eye on the performance of Reserve Rights Token, or RSR, for quite some time. With the recent surge in its value, I'm considering selling a portion of my holdings. However, I'm not entirely sure where to go to execute this transaction securely and efficiently. Could you please provide some guidance on the best platforms or exchanges where I can sell my RSR? It's important to me to ensure that the transaction is safe, and I'd appreciate any insights you have on the most reliable options available.