This is a wood front header bow from either XK150 or XK120 Drophead coupe or convertible; NOT a roadster or open two seater. I believe it is XK150 DHC; but appreciate advice. I would suggest ,making a copy out of white ash or mahogany.. For similar parts,go to my eBay store, then click on the Jaguar Xk120-XK150 Parts section..I also sell a parts book for the XK120 DHC, also volume 1 and 2 for XK150. I have many thousands of original British parts, all marques; 1949-1994, in my Time-warp SEBRING,Florida warehouse, and several hundred on my eBay store, Old English Motor Company. Those are organized into 20 categories. ..