Coins of Guatemala - some questions

Dear fellow collectors,

My friend just returned from Guatemala and brought me a big amount of different types of Guatemalan coins. I checked them all and I have some questions - maybe someone can answer?:

1. 5 Centavos (KM# 276) and 10 Centavos (KM# 277) - normally, these coins are made of copper-nickel and they are non-magnetic. This is true for all years of mintage except 2009 - both 5 and 10 Centavos 2009 are magnetic. Does anyone know the material and KM# for those coins?

2. 25 Centavos (KM# 278): all types and years of mintage are with plain lettered edge (lettering: REPUBLICA DE GUATEMALA C.A.), but 25 Centavos 2011 is with reeded edge (!) without lettering. I can't find this type of coin in Krause catalogue (2001-present, 6th edition, 2012). Maybe someone knows more about this type - does it already have KM#, and what is other data about this coin?

Thanks in advance!

Good luck,
Roman

who added this? 2009  other material/ 277a ? magnetic
https://en.numista.com/catalogue/pieces2259.html

 2011 only brings up one Guatemala coin? 1 Quetzal.  Can you get photos?  

I don't know who added the notes about 2009 - 5 and 10 Centavos - but this person was right, these coins are really magnetic. Still I'm not sure about km# - maybe it is different (not 277a)
About 2011:
I have on hands two coins of Guatemala minted in 2011 - 25 Centavos and 1 Quetzal.
In the info concerning 1 Quetzal I added 2011 year of mintage myself. It doesn't seem to be a different type.
About 25 Centavos: I still did not add this coin to Numista because of its edge - as I said, it is reeded without lettering, and in all previous types of Guatemalan 25 Centavos the edge is plain with lettering. So I guess that's a new type.
Here I attach the pictures of both coins.

if they have a different material it is some "plated Steel" type coin - since they are magnetic.
They need a separate entry then - I will add it. however, please check if this applies to all 2009
coins

I have a 5 centavos unc.  1998 coin from Guatemala that is magnetic.

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Cita: combrigDear fellow collectors,

My friend just returned from Guatemala and brought me a big amount of different types of Guatemalan coins. I checked them all and I have some questions - maybe someone can answer?:

1. 5 Centavos (KM# 276) and 10 Centavos (KM# 277) - normally, these coins are made of copper-nickel and they are non-magnetic. This is true for all years of mintage except 2009 - both 5 and 10 Centavos 2009 are magnetic. Does anyone know the material and KM# for those coins?

2. 25 Centavos (KM# 278): all types and years of mintage are with plain lettered edge (lettering: REPUBLICA DE GUATEMALA C.A.), but 25 Centavos 2011 is with reeded edge (!) without lettering. I can't find this type of coin in Krause catalogue (2001-present, 6th edition, 2012). Maybe someone knows more about this type - does it already have KM#, and what is other data about this coin?

Thanks in advance!

Good luck,
Roman

I saw a new KM # number 277a for the MAGNETIC Guatemala 10 Centavos  2009 ,  2010 , which I think is the same type of 2011 , but I have to clarify if KM # 277a really exist , as listed here :

http://giladzuckerman.webs.com/mercuguinness.html#GUATEMALA