Bowl is consistent with 1953 & 54, maybe 1955 too.

Should fit several years of Nailheads but correct for the older ones.

Bowl is clean inside & pump spins freely.

These normally need only a front bearing & new seals but is sold as a clean core for rebuilding.

Pump itself was used on Cadillacs, Olds, Pontiac. Sell the pulley & brackets!

Hard to find in this condition, 

Pulley is straight.

Make Buick Great Again!