[CR]"Buried Decals" under Clearcoat, timeline?

(Example: Production Builders:Peugeot:PY-10)

Date: Mon, 29 Aug 2005 12:20:48 -0700
From: <vjp@telus.net>
To: classicrendezvous@bikelist.org
Subject: [CR]"Buried Decals" under Clearcoat, timeline?

I understand that it is common practice during restoration to "bury" decals/transfers under clearcoat for preservation and presentation, but when did "clear" over transfers happen for OEM bikes? Was it after 1983?

Thanks

Victor Penner Van/BC/Canada