Hey Jimmy,
that's the agitator that we had in the Hotpoint washer that my family had when I was growing up. I think our machine was a '67 or '68 "Lady Executive". I still have the instruction manual. There was a round bleach dispenser that fit over the agitator and into the filter pan. There was a hole on the inside rim of the bleach dispenser and as the water pumped up the agitator shaft and into the filter pan, some would go through the hole in the bleach dispenser and dilute the bleach. As the volume of the diluted bleach mixture raised in the dispenser the back and forth motion of the agitator and filter pan would cause the bleach to spill out and into the wash tub. The only problem with that set-up was that it took the whole wash period to get all the bleach into the wash tub. Anyway, love all your finds and hope to see you soon.
Jim