Vintage Wood-look Rooster Salt and Pepper

This is a vintage salt and pepper set, possibly made by Lefton. The set has a wood-like texture and glaze with a colorful rooster on each. They have plastic stoppers and are stamped on the bottom 50/458. I would guess these are from the 50's. They are in good condition however there is a small chip on the foot of one of the roosters. (See Enlargement #4--rooster on the right.)