The big problems here (apart from it being quite time consuming) are that modern fakes are generally not thin enough for the light test to be conclusive - and that the huge variety of different holographic card treatments in Pokmon nowadays react to light in totally different ways
It's a good WB card for EDH moving forward, too
Supposedly, before the original set of cards was released, the company stamped PRERELEASE on several Raichu cards and gave it to a few employees
Here is what I have so far: Base Set 1st Edition Holo - 1st run (Thick Stamps) : Company ?, Date: 11/98 , Form 7, Sign-Off: 11-30-98 7:25AM 1st Edition Holo - 2nd run (Thin Stamps) : Company ?, Date: 01/99 , Form 7, Version 2, Job #P06057270 00 0140, Sign-Off: 1-3-99 2:45PM, TP (Time for Print): 12/10/98 D.Davis 1st Edition Holo - 3nd run (Shadowless) : Company ?, Date: 01/99 , Form 7, Version 3, Job #P06057270 00 0140, TP (Time for Print): 12/10/98 D.Davis Unlimited Holo - 1st Run (Shadowless) : Company: ?, Date: Unlimited Holo - 1st Run (Shadowless) : 2/99 , Form 9, Job #