Hello friends. Once had a mamiya press sliding back for my toyo 45C. sold everything.
Since i have Toyo-View prospectus in german plus english leaflet from sakai special camera mfg co ltd. describing all 4 film holders here are my findings. unfortunately cannot scan right now.
there are RB and Mamya Press Quick roll sliders. there are 6 versions, right not 4 only.
For Toyo 23G only (67/69 camera)
No. 102233 for mamyia press(not Model 3)
No. 10235 for Mamyia RB 67(backs) + Toyo No. 8032(56x68mm/67 format), No 8034(56x84mm/69 format)
8032 and 8034 are Toyo roll film holders also for Graflok type camera backs for 6x9.
---------------------------
for every International 4x5 back after removing groundglass
No 1043 for mamiya Press back (not model 3)
No 1045 like No 10235(see above)
for Mamyia RB 67(backs) + Toyo No. 8032(56x68mm/67 format), No 8034(56x84mm/69 format)
8032 and 8034 are Toyo roll film holders also for Graflok type camera backs for 6x9.
------------------
direct mounting in place of/instead of all Toyo 4/5 Backs
No 1033 for Mamiya Press backs(not model 3)
No 1035 like No 10235(see above)
for Mamyia RB 67(backs) + Toyo No. 8032(56x68mm/67 format), No 8034(56x84mm/69 format)
8032 and 8034 are Toyo roll film holders also for Graflok type camera backs for 6x9.
--------------
Fazit: no model 3 can be used. Anthony Sansone is telling anyway is telling using Model 2:
"The whole issue of film flatness does not apply to the 6X7 and 6X9 Model II Mamiya Press film"
btw: i have a custom made Model 3 vaccum-back. but its a wrong constuction. to big and few holes. the center hole is sucking in the other direction that the outer holes...
ok cannot use it on the quick roll sliders(German: Wechselschlitten) anyway.
------------------------
outside the Quick-roll sliders are these two Toyo roll film holders
No 8031(67/45)
No 8033(69/45)
a) direct mount on Toyo 4x5 Universal back or Graflok type 4x5 cameras
b) slip in under 4x5 ground-glass like 4x5-sheet-film-holder