Antique Victorian Masonic Pendent, Glasgow Cathedral, Oak Wood & Gold

A antique oak wood and 9ct gold masonic pendant, in the form of a keystone with a remembrance of Glasgow Cathedral in the later years of Victoria's reign. 2 gold circles attached to the wood with "oak from-- Glasgow--Cathedral--11.97" and to the other side are the letters "S H T W---S S Tk". Not the best of condition but all is secure and is wearable, stamped "9ct" to the gold surface. It may actually be gold cased or a thin band of gold over base metal rather than gold. Presumably the oak came from the the re-roofing over the nave carried out in the later years of the 19th Century and early years of the 20th Century. as the medieval oak rafters were found to be unsafe and were replaced.