Mike is correct. In 68 the stove pipe was blk, the stove was galv. The one pictured is not correct for the year. A 68 stove is wide and channels heat from the full length of the manifold and is a single piece stamping, unlike the 69 assembly design.
I see that the older pic posts were not recovered. I can post a pic of the assembly it it helps. The finish on my stove is not correct yet however.