[LargeFormat] graflex roll film back

[Dave Southwood]

i procured an old graflex '23'  GRAPHIC roll-film holder(6 by 7 i think) for
4 by 5 and i am curious as to how it works. it has no ground glass but a
rectangular groove into which glass may once have fitted. has anyone the
same back? is it misssing the glass? if so would it be possible to have a
replacement fitted? i cant see any screws which, if loosened, might allow
acces to the pertinent groove so i reckon im stuffed....

is it customised for a graflex camera? i cannot see how it fits onto the
back of my technika mk IV.

i also have the option of buying the following two lenses for a song, they
would be back-ups:

rodenstock ysarex 150mm 1:4.5

schneider - k tele xenar 240mm 1:5.5

any ideas(rhetorical)

thanks