1 says M series and the other is either too worn to read or was never stamped. Look at all pictures for condition and specifications.
Vintage USA Ivanko 2x 45 Lbs M Series Weight Plates Olympic Size Deep Dish (2)
Vintage Pair IVANKO 15 Lb. Dumbbells Chrome Finish Textured Handle 30 Lbs Total
2 Vintage USA BULLDOG FITNESS OLYMPIC BARBELL BAR Collars WEIGHT LIFTING ????????
Vintage IVANKO 25 lb Plate Weight Olympic Barbell Company M Series Deep Dish USA
Vintage IVANKO 45 lb Plate Weight Olympic Barbell Company M Series Deep Dish USA
