Hello bora1978,
Sorry for answering so late.
According to my Krause catalog, KM#110 was minted in 1992 and 1993 and KM#110a was minted in 1993, 1994 and 1996.
Do you personally have a 25-centavos coin from 1997 or later?
I definitely don't find any report of 25-centavos coins struck in 1997-2008.
Can you send pictures of 1997-2008 coins?
I've found 2009 yellow-colored coins. They might be new KM#110 or a new type.