1965 barracuda spare tire cover question

The one in the photos is the 1/4" thick '65 Barracuda piece. Note that the cutout for the trunk latch isn't symmetrical.
Hey Grimreaper... I have Never seen "quarter" (1/4) inch Masonite, only 1/8 th !!! Your photos do look like Masonite... let me see a "Edge" photo of the one you show with a close-up and your tape measure over it... please... the one I show is what came in a 65 Barracuda Formula S.... With the fold down Flap in those Barracudas, they had to be Thin... especially with the 14 inch wide Formula S wheels....
Thank You in advance...
Here is a picture of mine... with a Vernier calliper
20200401_085835.jpg