I've spent a few hours with an anglepoise lamp and a camera trying to see a pattern in my suspected cards, and I really am none the wiser.
The GM Han Hoth, has a square sticker mark on the back (like a genuine German card), a lined waffle seal but an 03 bubble - my Kenner Han Hoths have 02 bubbles.
There are apparently 100s of Han Hoth GM cardbacks
The 03 is very pronounced and apparently this is a good sign...
Is this a genuine card with an 03 bubble or a Toni with a very good seal? - I have no idea
Next up the 45B Bossk,
Once again a cardback that exists in the 100s, and an 03 bubble when ?others have an 011. The 0 is clear but the 3 very vague - an apparent sign of a Toni
The card has the exact same lined waffle seal as the Han Hoth and other genuine GM seals, but there is a TIE pilot in this thread with a similar seal and that is assumed to be a Toni.
On this there is a small square sticker rip - a Toni price tag or a shop price tag?
It also has score marks at the top and bottom - anyone seen these on a Toni?
My last supposed Toni is the GM Stormtrooper, a mint card, a clear thin line of seal, a bubble with dimples (now assumed to be genuine) but shipped across the Atlantic at least twice and no sign of the bubble falling off. A near definite Toni but you'd be a brave man to open it on the evidence...
Lastly the most obvious Toni produced item - but it's a Kenner 48 back, bought from the States and is a genuine factory sealed card complete with waffle seal
1. An unpunched mint card
2. Although an 02 bubble, the 0 is clear but the 2 is squashed like there is too much heat
3. Air pockets in the seal
Conclusions - Toni is a ****ing genius and I give up