Hi Etranger -
1) a very good source for Fabergé is the exhbition catalogue from 5. 12. 1986 - 22. 2. 1987 in Munich/Germany by Dr. Géza von Habsburg,
Title:
FABERGÈ Hofjuwelier der Zaren (Court Jeweller Of The Tsars)
ISBN 3-7774-4441-X Many marks and explanations. One of the best! Try at Amazon or similar online bookstores to get it.

2) Fabergé mostly used BURE clock movements
3) The shown photo with the phantasy marks is just funny - it has
nothing to do with Fabergé! I can not believe that someone really is buying this junk.
Regards
Zolotnik