As far as I know, sticker #1 came on the 'slot' Campys found on the US spec Panteras. Sticker #2 came on the 'window' (Gr4, GT5, GT5-S) style Campys.
The style of lettering was probably changed as time wore on.
Michael
PANTERA INTERNATIONAL
A DE TOMASO CAR CLUB
Presents the De Tomaso Forums
The On-Line Meeting Place for De Tomaso Owners and Enthusiasts From Around the World
Clicking on the banner will take you to the sponsor's website.