I recently acquired these from a local estate. The salt & pepper shakers are just under 3 1/2" tall. The frosted glass shakers have a painted apple and leaf design by Gay Fad Studios. The white tops are plastic, possibly bakelite, but have not been tested.
The bottoms are hallmarked with the anchor but will have to wipe with wet cloth to see on the frosted glass. The shakers are in wonderful vintage condition. The pepper shaker is the one with the smaller holes in the shaker and you will notice the slight darkness in the glass from having pepper inside.