how old are my Lx

Lx production dates and serial numbers, both my Lx serial numbers start with 53, my questions being, do all Lx serial numbers start at 53 and is there a data table available that would allow me to give a production to ky Lx via the serial number

My older LX, starts with 52 but my later one starts 53.
The later one has the cup type shutter lock.

Not seen a data table of serial numbers though.

many thanks this is very helpfull

Try here.

K.

many thanks

Good info here on all the K mount Pentax gear. http://kmp.bdimitrov.de/about.html