[Topnotchsy]

Posted this one Facebook, but sharing here as well (with some minor additions).

I'm usually quite confident with Jackie auto's, but am unsure about this one.
It doesn't have the loop on the "c" in Jackie that you often see in forgeries, but I've also never seen the "c" have that line down in the connection from the "a".

The last name has irregularities as well. I don't recall seeing an R that has the pen pulling up on either leg like this one. The "o" is funny shaped and I don't recall a Jackie sign where the tail of the "b" doesn't flow right into the "i." Additionally, the dot on Jackie's "i' is usually on top of the I, not above the 'ns'

I'm not certain it is not good as nothing jumps out as clearly fake, but I would not feel comfortable buying it without a guarantee that it past 3rd party authentication.

(I'm not a professional grader, but have been collecting Jackie for years so have seen images and examples of hundreds and currently have 10+ auto's.)