Mamiya 6 (six) filter size

I just scored a Mamiya 6 V folder which is quite good condition. I noticed that the front lens has no filter threads. So a push-on filter adapter of some sort is needed, I suppose. Does anyone know what size push on filter adapter I need to get for it? I measured the diameter of the front lens mounting and it looks close to 36mm in diameter but it's not exactly that. The lens is the Olympus Zuiko 75mm f/3.5. Any Mamiya 6 (six) owners out there that have acquired a filter adapter for that lens?

Stan

Many of the adapters were made in inch measurement not metric. This works out to 1 27/64" I don't recall
any in that small an increment but that does reduce to +/- 1 7/16". Shouldn't have a problem getting close to that.
BTW the slip-on adapters were(ahem) adjustable.

I use S VI.

I bought a 36mm push on hood for mine and it fits just right.

Thanks Guys! I was able to find a nice set of push-on filters with a Mamiya push-on lens hood in a leather case for quite reasonable money on the auction site. The Mamiya looks really ready to work with the hood mounted.