Yes, it’s a cannonball safe. Weight - no idea but as you can guess very heavy. Moving these is best left to experts as it can be hazardous, even downright dangerous. More than 1 person has been killed moving safes.
Value is hard, whatever your local market will bear. I’ve heard of them selling for 1000’s or of people having to pay to get them taken away. Sometimes the locks are worth more to collectors than the safe is. That’s less true these days as the market and value for the locks has taken a pounding, plus the timelock you have is not in original condition, the dials have been replaced which will tend to destroy it’s value to a collector.
If you spend a little time processing the photos you have to reduce their size a little they should upload just fine.
