Fender Tag mystery?

I have a 1965 Valiant V100 and have an oddity with my fender tag.

Under BDY it lists V11, which denotes it as a V8 Valiant.

But under engine, it lists 10, which denotes it as a 170 inch 6 cyl.

So what gives? Factory odd ball, or stamping mistake?

Thanks, Eric L