If there is moisture in here, this is in all probability why the clock failed. You might want to put the meeting somewhere warm and dry for a day or so, to drive off the moisture. Once this is done, spray or drip a TINY amount of the oil into the mechanism. Try putting the batteries again in, and hopefully it ought to all work again.
Water your empty pots- The unglazed terra-cotta pots tend to absorb a lot of water when new. This is one of the main the explanation why the plants suffer from drought at an early stage. You’ll be able to totally water the empty pot an excellent number of times before adding any soil.