Looking for more information about my Motosacoche, I came across this topology guide from RTS (Swiss radio). This publication contains valuable information on the lifetime and chemical composition / decomposition of lacquers. Audio restauration aspects and techniques are also discussed. Moreover some recipes and spectrometric readings from different lacqer types / manufacturers are also shown. I think, highly interesting and an excellently researched publication! Enjoy!
![Shocked :shock:](./images/smilies/icon_eek.gif)
https://kennisbank.avanet.nl/wp-content/uploads/2020/09/Typology_guide_RTS_lacquer_discs.pdf
B.R.
Martin