The lens was made for Poraroid MP-3/4 (4x5 format) cam,
hard to mount on anything due to M40 thread for Copal
#1 shutter mount system. The filter thread is ∅39mm.
Yeah, this lens was made by TOMIOKA of course. ($45)

When the bellows is folded, it is a little beyond the lens' infinity position.
BTW Minolta compact bellows in this pix has been modified to E-mount.
(It is quite easy to change the mount of this Minolta portable bellows.)