My father bought this in September 1955 and it is still
as good as new. It uses 16mm film but dad used to buy
a roll of 120 (Brownie Box camera film)
and split into 16mm wide strips using a device consisting of
razor blades mounted 16mm apart on a base board. (... in the darkroom of course... bathroom blacked out!)
This gave him 3 or 4 strips with about 40 shots on each strip.
Total cost 3 shillings and sixpence (... somewhere near 35 cents)