When I own a card, its Gold number and the quantity I own are indicated.
If the quantity (the second number, after the "x") is greater than 1, then the card is available for trade.
I'm looking in priority for cards I don't own at all, whatever Gold value on the back. But I'm willing to get also cards I already have but with a different Gold value.
Also, all cards don't have the same back, but it's not my priority to get all cards with all backs!
For the differents backs, see
Ref. 1-02 : BD - Cunning tactics
Ref. 1-03 : SM - Blood for the blood god
Ref. 1-01 : WA/SM - Facebeata's dark boyz
Ref. 1-06 : BR - Rally against the unjust
Ref. 1-04 ; SM - Ar-Ulric's Teutogen guard
Ref. 1-05 : WA/HW - Anelia, mistress of Slaanesh
Ref. 1-07 : SM - Pleasureseekers (inversé)
Ref. 1-08 : SM - Black riders
Ref. 1-09 : WA/DW - Sengupta's cobra cult