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Please read this: Eidos Anthology (Asia) - subID 52125 have special tag: AllowCrossRegionTradingAndGifting: No
If you said "Can be redeemed in all Countries except Germany." --> It should be subID 52123
If you purchased that Eidos Pack from Singapore, it have subID 52125 (a.k.a store page http://store.steampowered.com/sub/52125/). So, you cannot trade it or gift it cross region (outside Asia region) based on SteamDB Data - Eidos Anthology (ASIA).
This is the Game Link: http://store.steampowered.com/sub/52125/
Can be redeemed in all Countries except germany.
Will accept other offers if u overpay.
Add me to discuss. Prices firm.