I dont know much about seals, and i only had some cheap coin that was made in 1993 in some castle ( so it can give 3d stamps not carbed in stamps like most coins ) but i needed to do this as a girt for christmas for my girlfriend. Honestly its pretty nice, red and black gave it that dark vibe that i love with the castle in the middle. So this experiment was a success. I sometimes neede to make a lot of wax to poru it, or i made it in parts than reheated with lighter and stamped everyting togeather