Lercus

Hello, I also have a question to my pair of Heresy. I get them more then 10 years ago, of my grandpa. They sound still great and i love them. Since I get them, I want to know, how old they are. For shure, older then me. Someone know, if the color is original? The serial number and the name of the person (how tested) is handwritten. Thank you. Greetings