Welcome to the vintage Timex watch crystal database. This is a digitised copy of the Regular Crystal Material System Identification chart 980 TX2L from 1979 so should cover a majority of vintage watches pre-dating that.
My hope is that you can use this database to find donor watches with crystals you can use to replace that on another model.
Link to the Google Doc containing the database https://docs.google.com/spreadsheets/d/1xLo9i8iLp7HFzQMJoC0uGaKlYVmhSj5sB3nuEFEth08/edit?usp=sharing
If you spot any errors please let me know via @timetrope on Instagram.
The letter A at the end of a dial code means the watch was made in the 2nd half of the year.
In 1974 Timex started adding a 0 before the movement number. I suspect this was in preparation for the m1xx movements which appeared later that decade.