Question about acrylic crystals and their usage

I was wondering if VC ever used acrylic for their crystals.  I've read that acrylic glass was invented in 1928 and came to market in 1933 through, the German company, Rohm & Haas . 

I believe that all crystals that are in use today by VC are synthetic sapphire crystals but was wondering if there was a period of time when acrylic was the hot, new, technology that was used by VC and other high-end manufactures?

BR, Dan
VC used acrylic crystals for their
03/11/2009 - 11:09
watches up to about the early 60s where progressively (synthetic) saphire crystals replaced them.
Perhaps into the 1970's?
03/11/2009 - 17:11
I have pieces from 1970 and 1975 with acrylic crystals.
Re: Perhaps into the 1970's?
03/11/2009 - 20:06
Thanks both Alex and Dean.  Before reading a tidbit about acrylic recently, I thought it was invented much later - in the 50's-60's (the negative impressions you can get from the movies,  i.e. "Benjamin, the future is plastics" from The Graduate ) So I used to think that it may have started it's use as a watch crystal in the 60's-70's and ended in the 70's-80's.  Obviously it's been used for a much longer, and older, time than I suspected. BR, Dan
First used in 1934
03/12/2009 - 17:17
According to an industrial website, transparent acrylic was first introduced in 1934 in watch crystals. Prior to then, I believe mineral glass was used.  Acrylic was very tough and it was also easy to polish out any scratches, so it was an advance over mineral glass.  For our vintage watches with their highly domed crystals, acryic remains the only choice as it is moldable whereas sapphire is limited in how much you can shape it.
Thanks for the info, I was a little surprised...
03/13/2009 - 11:13
that the watch industry, especially the high-end manufactures, accepted the new technolgy/material so quickly after it was introduced to the market in general. Pretty cutting edge, otherwise I would have expected them to have the technology proven out before committing to it. Or mineral glass was something they were so unhappy with that the were eagerly looking for an alternative? BR, Dan
the problem with mineral glass was that it was extremely fragile and
03/13/2009 - 17:24
woould break. Its fine on a pocket watch which is protected in a vest pocket but on a wrist watch which can recieve shocks it was not the best of solutions.