161.014 with Roman numerals

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Hi Brains trust. Just picked up this little number and hoping someone can tell me a little about it.
It looks legit with signed crown and crystal. Face looks a little discoloured but printing is sharp and seems original to me.
26mm square.
It is on a non-original bracelet and was hoping someone might be able to tell me what it originally came on.
I would also be interested to find out its age.
Any info is appreciated.
B
 
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The 161 part of the reference in the caseback indicates that it's:

1 - Gents watch.
6 - Self Winding Centre Second.
1 - Non-water Resistant.

Therefore, it would have originally been sold with a leather strap.