I really don't know much about cryptography, so I didn't get very far. There are 15 characters, so it can't be one of those Caesar square things. I suspect that some characters when combined correspond to a letter, but I'm not sure.
For reasons of a personal nature, it's important to me that this code get cracked as soon as possible. I spent a long time on this but I simply can't get - cryptography has never been my strong point. I'd appreciate any help! Thanks so much in advance!
53Xb48ECR1602YL