found some old colour PX680 that expired in 2013. Only half of the film "worked" : r/Polaroid
The Impossible Project PX 680 Color Shade Gold Edition
Polaroid Photo Album/ Film Holder Translucent for Polaroid FP-100c Fujfilm Instax Wide Polaroid of PX70 PX680 PX600 PX - AliExpress
The Impossible Project PX 680 Color Protection [Guide]
Impossible Project PX-680 V4B Opacification Test Film | Justin Goode
How to shoot (use) 600 film or PX680 film in an SX-70 Camera - YouTube
PX-680 Color Protection Film for your #polaroid 600 cameras now in stock. Get it while the gettin i… | Cards against humanity, Impossible project, Social media post