52t chainring and 19t cog on hub. According to the gear calculator, First (low gear) = 48 gear inches with a .68 to 1 reduction.
Second (high gear) = 71 gear inches and is direct drive.
Compared to a 1955 Schwinn Tiger SA 3 speed with SA type AW 3 speed hub.
The ratios are 0.75, 1.0, and 1.33...