[RodB]

The way it is cracked, all up and down the corner, suggests the veneer has been in a dry environment for a very long time or alternately dry and not so dry. This causes the veneer to move, but the glue wants to hold it in place. I'm not an expert, and others can chime in, but I think if you can remove the veneer from the corner, work on the repairs, then glue it back you might have a decent result. It looks like it has released from the glue at the top, so maybe some steam might make the rest of it loose enough to remove it. Some people will just re-glue the loose area then fill in the gaps, sand down the cracks and refinish. All depends on how you want it to look and how much work it takes to get there. How to clamp a curved surface is another question.