I've been trying to find a rear window for my 54 Mercury hardtop but not having much luck. I bought a window the other day thinking this was the right one, but still but not correct. The markings on it are PPG Herculite Solex AS2 9-107. It measures 18 1/18 x 55 3/8. This window possibly fits either a 55 Ford Hardtop, or a 57 Ford Hardtop? Anyone out there have any information on this glass or where I could find information? This site is very difficult for me to log in to, so send me a message to flatheadjr@gmail.com. Thanks