Hey there!
We are aware of an issue related to Coin images not properly loading sometimes in your inventories, we have been trying multiple fixes and the images usually load much better now. Work is - unfortunately for us - not over yet, and some of your Coins images might still not load properly on Steam.
Your Coins are of course still there in all cases, you only need to check back in a little while so the image can try loading again. This is an issue related to server load.
We will continue trying to deploy a final solution to this issue. If you notice any weird behaviour, as in an image loading in place of another, let us know by opening a discussion or leaving a comment providing a screeshot, your feedback is valuable! ːsteamhappyː
Have a good day boys!ːsteamthumbsupː