UPDATE
Hopefully this helps someone out there as I've finally solved my problem. The valve is actually made by Riobel for SOL ( all markings on valve, knobs are SOL). Riobel is a Canadian company from Quebec with an office in Woodbridge Ontario as well. I brought the valve to them and after...
I'm not sure. I've just moved in less than 1yr ago and I cannot reach the previous owner. From what I can see on the assembly,there are no model markings other then the sol logo on the handles.
Ive final figured out that my shower cartiridge is made by sol however I cannot seem to find any info on a replacement or a duplicate image of it anywhere on the net. Any help would be appreciated on where to locate a new one preferably in North America but I'll take anything at this point...