Pocket Change

My wife has travelled extensively throughout the world (pre-EU) and when she would get home she would throw her "pocket change" leftover from the trip in a jar. Not a lot of stuff and mostly 1975 and above dates and again this was before the EU formed.
I was just looking through the jar and found this coin and another like it dated 1955.
Given that I am new to this stuff, can you tell me what metal these were struck in? It seems to have very nice definition for a circulated coin.
I'm assuming this is a British coin?

I was just looking through the jar and found this coin and another like it dated 1955.
Given that I am new to this stuff, can you tell me what metal these were struck in? It seems to have very nice definition for a circulated coin.
I'm assuming this is a British coin?


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Comments
In the coin above, there are virtually no signs of wear on the reverse with all the details readily visible on the flowers? The obverse has a only a few hits on the bust and one in the field at 9:00. Otherwise I would say this coin is easily higher than EF or would be MS (?).