Rycot
The measurement from the leading edge of the fin to the trailing edge of the fin at the tailplane (i.e. not including the rudder) is approx 770mm so at 525mm the “chord” of your item is too short for it to be a tailplane tip. Suggest you try the folks at Temora as they have the world’s only airworthy Hudson.
[EMAIL=”info@aviationmuseum.com.au“]info@aviationmuseum.com.au[/EMAIL]