Polaroid Model 73 Pack Film Holder ?

[J Durr]

What can the Polaroid Model 73 Pack Film Holder be used for?
I know it was made for the 600SE model, but can it be converted
or used for 4x5 LF?

ThanksView attachment 190977

 

[blockend]

Wrong board.

 

[J Durr]

Please delete it