Quote Originally Posted by doorsch View Post
To add a really important Note here, this is a SRD Coticule. It was sold from SRD....

Severin Robert Droescher kept the Trademark rights for the "Genuine Old Rock" Typo. The Tradmark was registered as
243.788 as Class 4 Abrasive Detergent and Polishing Materials. Filed at 19th April 1926 as Serial No. 230.387
Thank you for the information. How are you able to tell that this is one of the coticules labeled as an Old Rock and sold by SRD? I have an SRD coticule also and that had a clear SRD stamp on it. This stone has the old rock crest as a stamp on the stone. There wasn’t a mention of Droescher anywhere on the stone or the box.