Wardonia 3-Barrel Hole Blades/substitutes?

[Urban Hermit]

I have a Wardonia 'Devon' boxed razor. I bought it quite a while ago off of ebay. I didn't know at the time, but they use a proprietary blade. I'm fairly certain the blade type is still made today, but, I think it's generally used for stripping paint.

Does anyone know if there is a shave quality version available for them? ... or is there a blade that will fit and do the job as a feasible substitute or the others?

Thanks in advance, cheers,
UH/John