I posted this on the OB, but I figured some here would appreciate it. I had a Bible with a bonded leather cover. It wasn't too old (I've seen plenty of bibles in worse shape than mine) but it was aging quickly. On recommendation from someone on the OB, I mailed it off the Leonard's Book Restoration in Indiana, and had it rebound in solid calfskin. Turn around time was a month, and I suspect it will last much longer.
Here is the original cover:
Here is the original cover: