Hi PAHO, the printed legend reads;
AC – ARMOURPLATE – Toughened
E11 DOT 50 M272 AS-2
43R-00083
However, I don't think this will give any clue to a donor vehicle, it just seems to cover the approvals the glass complies with.
Front windscreens for the Ace Brooklands are taken from the Ford Sierra Mk2 WITH heating elements. I bought a brand new one in 2015 (really low cost as you would expect from a volume donor vehicle) from the former supplier to AC Cars Ltd as follows;
Old School Windscreen Services
Old School Cafe, Longcross Road
Chertsey KT16 0DP
Surrey, UK
Their Product Ref/ Catalogue No. 3543/924/PILK
Shortly after I collected it, would you believe it, someone ran into my Ace and cracked the windscreen! I actually had a replacement supplied by the body shop via National Windscreens (a mobile windscreen fitter in the UK) and still have the spare I bought. I am sure you will be able to source a Sierra Mk 2 windscreen locally, but I would have thought Old School will be able to pack and export to Sweden if required.