Maybe not bridle. Here's Terry's description of the belt in an e-mail:
The leather is slow-tanned in oak-bark tanning liquor over a period of 12 months. The thickness is 5.7-6.5mm (15-16oz). The buckles are hand-cast and hand-finished solid brass.
Do you have a belt from Terry Dear? If not, you should get one. I have one a few years old in his ultra thick bridle leather/natural oak bark tanned and it is aging in an amazing and beautiful way.