Dooney & Bourke Light Blue and Tan Shoulder Bag

Authentic Dooney and Bourke bag perforated leather seems to be from the Cabriolet collection. It says it’s irregular, but I honestly can’t figure out why. The bag is in great shape. It was my mom‘s and she had hundreds of these bags. I also have a burgundy box leather and croc-embossed yellow bag in the same style.