The alien registration card change their design in KOREA.

From April 1st, the alien registration card, domestic residence report card for foreign nationals under government administration, and permanent residence card will also change their design.
The validity of the old alien registration card is valid until it is reissued.
In case of reissuance due to loss or change of status of stay, a new alien registration card will be issued.
However, if you wish to replace your alien registration card with a new one, you can reissue it after returning the original alien registration card and paying the fee (30,000 won).
Immigration and Foreigner Policy Headquarters, Ministry of Justice
[Source] Ministry of Justice(www.moj.go.kr)