Pro Patria Et Imperio medal

Let's see if I can push my luck with two identify-this questions in one night...
This medal is bronze, 38 mm. Google gives only one hit on the phrase "Pro Patria Et Imperio", and it isn't helpful. When was the last time you had a search on Google that returned only one hit?
I translate the legend as something like "For Country and Empire" That makes me think British. General style makes me feel like 1880-1920. There is microscopic text at the bottom of the obverse reading REGD 540687 -- also unhelpful to me.
Does this ring bells for anyone?

This medal is bronze, 38 mm. Google gives only one hit on the phrase "Pro Patria Et Imperio", and it isn't helpful. When was the last time you had a search on Google that returned only one hit?
I translate the legend as something like "For Country and Empire" That makes me think British. General style makes me feel like 1880-1920. There is microscopic text at the bottom of the obverse reading REGD 540687 -- also unhelpful to me.
Does this ring bells for anyone?


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*This is just logical to me. I have no basis in fact or book, just from what I see. Maybe see if you can ID the patent number?