Not sure if this is a modern bone or not, it's pretty heavy and was found on Lowestoft North beach or Cove Hithe,can't remember which. I have a few more bones I will post soon.
Glad of any info
The colour suggests its not ancient - some time in the last century? Its difficult to be more precise because a lot will be down to the conditions its been subject to. Generally older bones that have been buried for a while start staining from the chemicals in the soil.
I have an adult fallow deer jaw bone, assuming the above image shows only the root sockets of the 1st 2 or 3 teeth after the diastema, it is over twice the size of that.
Those are inches on the top of the ruler ?
As already said, this is modern bone I'm afraid, not fossil. It could be a few years old or a few hundred, as it is really hard to say with weathered modern bone. It is a small herbivore, I think it is from the Bovid family, so the most probable is a young cow or a sheep. These farm animal bones end up all over the place and are commonly washed up on beaches.