These are two unused rolls of Uni-Pan 14-exp film for the Minute-16. It is a medium speed (now considerably slower) B&W film. Uni-Color was also available.
Made in 1939, the Univex Twinflex is one of the smallest TLR cameras ever produced. With matched meniscus lenses, one-speed shutter (plus bulb), and a lightweight bakelite and aluminum construction, the Twinflex is a pocketable TLR.