Date this Button?

[romeo-1]

It's a two piece Police Force button found in Nova Scotia Canada. There is no backmark. Thanks for looking.

 

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[Tubecity]

Nice old button, but no idea on the date. Have found a few like that in my area,
with a different crest and city name. Wonder if they were from 'parade dress
uniforms' or regular issue wear.

 

[CRUSADER]

From the crown, I would say 1920-30s.