As somebody mentioned, Combat Straps in Montreal makes a lot of Panerai straps. But you don't need to restrict yourself to Canada. I live in Toronto, and I've had straps shipped here from Turkey, Italy, USA, UK and Holland with no problems. There are a ton of amazing strap makers, it can be overwhelming. The straps I have and LOVE are from Bosphorus, Handmade Watch Strap (Sanders), Simona DiStefano and Kostas. Other makers I have admired from a distance are Vintager, Greg Stevens Design, Kyros, Kevin Ammo, Toshi, and... I know there are more, but start by looking all those guys up. I'm sure other people will have good suggestions too.
Have fun!! 113 is a beauty!