Colombia 1884 20 centavos: KM 176.3 or 178.3? [opgelost]

I could not find anything that seems different between the two listings on this coin. What differentiates between the two? I have classed the pictured coin as KM 178.3 but but do not have 176.3.
Any help would be appreciated.

Well, for this date, the difference is on the mint. 178 was struck in Medellín and 176 in Bogotá. The size of the head is different too. See SCOWC 1801-1900
As you see, the head in 176 is bigger than 178 and touch the word UNIDOS.

Ps: For the picture is KM#178.3.

Thank you very much! Will mark this closed and keep my eye out for 176.