Apparently, the ClassIDs have changed.
168230920 -> 170672212
168230921 -> 170672204
168230922 -> 170672206
168230923 -> 170672211
168230924 -> 170672207
168230926 -> 170672203
168230927 -> 170672205
168230928 -> 170672213
168230929 -> 170672209
168230930 -> 170672214

I'm trading them for other mystery cards only.

1 decade ago*

I know each card has a serial number but how can I check mine?

1 decade ago
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Info here. The one you have is 24.

1 decade ago
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What card do I have?

My chrome won't dl the extension.

1 decade ago
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It's 22.

1 decade ago
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So are you trading both of those cards for 22?

1 decade ago
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Just got 22. Don't need it anymore.

1 decade ago
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Ok

1 decade ago
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Got a couple to trade. Added.

1 decade ago
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Added.

1 decade ago
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Thanks for the trade.

1 decade ago
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Added.

1 decade ago
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Dude I know this is a bit off topic but I tried follow the URL you gave to check your own Mysterious Card ID but keep getting an error trying to install SteamDB. Is there anyway you can tell what my 2 cards are with their unique ID'S?

1 decade ago
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http://steamcommunity.com/id/<yoursteamID>/inventory/json/753/6
Search in the managed lines at start.

1 decade ago
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Where abouts on it. To much random text lol!

1 decade ago
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You have 2x 168230923 -> 170672211

1 decade ago
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Closed 1 decade ago.