Android application "My Credit Cards" icon

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This customer received 12 icon designs from 7 designers. They chose this icon design from Rafael Marcon as the winning design.
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Icon Design Brief
Hi.
We need a new icon for our Android application "My Credit Cards".
http://alsedi.com/portfolio/my-credit-cards/
https://play.google.com/store/apps/details?id=com.alsedi.mycards
We need current one to be reworked.
Objects required on icon: Wallet, Credit Card or Cards.
Android Iconography rules are described here (see launcher section):
http://developer.android.com/design/style/iconography.html
Strictly required -> Use a distinct silhouette. Three-dimensional, front view, with a slight perspective as if viewed from above, so that users perceive some depth.
Required resolution is 512x512 px.
Icon should stay "readable" on various backgrounds, including very dark/light ones.
You should avoid Visa/MasterCard logos visible.
Industry/Entity Type
Store