In Pokémon Red and Green (v1.0 and v1.1), Nidoqueen originally weighed 6.0 kg, which is much less than what Nidoking weighs (62.0kg). In Japanese Blue and Pikachu (all three revisions) it became 60 kg.
In the English version and Yellow, it became 132.0 lb which is about 60 kg.
Furthermore, Geodude was originally 20 kg in Red/Green v1.0 and v1.1 but dropped to 2.0 kg in Japanese Blue. In Pocket Monsters Pikachu v1.0, v1.1, v1.2, Rev C, it is still 20 kg still (I still wonder about the differences between these revisions). In English Red/Blue/Yellow, Geodude weighs 44.0 lb (about 20kg).