A friend gave me around 50 old swing-top bottles. The youngest is 20 years old. I pulled the tops and took off all the rubber gaskets. After rinsing the dust off and getting the labels off, the soaked overnight in oxy-clean. Tomorrow I plan on hitting them with a bottle brush and a bleach bath before new gaskets. Any tips on dealing with old dirty bottles?

The bottles are really cool. Half are green and half brown. Mostly Grolsch with a dozen or so brown Altenburger bottles.
The Grolsch bottles are different than new ones. They are round and seem heavier.
