My 2 Lincolns...
Slingerland did have an "Artist" model SD with a solid maple shell available in the 1967 catalog. However, as already noted the grommet is not right and neither is the badge -- it should be black/brass and not black/silver.
So, if this drum is a 1968, the badge for whatever reason has been "tampered" with.
Now, as for the wrap... don't seem to have much fading of any kind for one that old. But, really can't tell on that...
Bill