this could be a GOOD sign - that it doesn't leak. Of course it is  full of water, it is out in the rain. Any water that lands on the lid will trickle in to the drum.

I believe these were made by Hitachi. (?)

you'd want the missing knobs to still be there.

The plastic  top may be brittle from UV exposure - it is a weak point of these machines.

They are not a fantastic performer, tend to tangle badly if even slightly over loaded.

Of value as a curiosity, not as a great washing machine.

I hope it is free...