Hay Hot; I think the cap is after market re-pop, not 39 deluxe, and not 40 Ford.
Google; Vintage Ford hubcaps on e-bay, you will find a site with mostly 50 and 60, but sometime the early ones come up. You will fine a mix. of all "As and Ts" too. A good, to real good 39 deluxe will go for $25 to 30 plus shipping, fair to OK $10 to 15 ?? If you want a "" HOW TO FIX ""E-mail me. I am going to send you pictures of the real 39 hubcap. look for PICASA on your email.... OLD....BILL