Look at a Bianchi 5BHL.
Ed
I don't have it here right now but it would be whatever size their chart suggests.
Ed
i have a 686 2-1/2 barrel found in a gunstore a desantis brand holster ,it fits the gun, holster has the number 001 on it and below it ,it says 33 not sure wich is the model number give them a try oh it is a leather owb holster