I have had this since 1990 ! Was on a black Gretsch kit I owned in London - took off front head as you do and it got forgotten when I sold it on .. I think square badge from memory but could be from the 70 s octagonal badge … keep seeing it in the corner and finally putting it on eBay One edge is straight and one is slightly angled that goes on the skin side this s how it should be. Measures 523 mm across ( 20 1/2 inch in old money )
