Need help IDing this button

[Merf]

I have never seen this backmark before--[Crown] It measures 1 1/8 in across.
TIA Merf

 

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[CRUSADER]

Not seen this backmark either, but looks like a crude Victorian Crown & I would say it falls into the Hunts (Sports) button catergory of late 19th C. Very nice looking one at that

 

[Bramblefind]

That is a great button!

This one here looks to have the same mark -

http://www.ukdfd.co.uk/ukdfddata/showrecords.php?product=5365&cat=all

Description: A die-formed three-piece button with separate brazed/soldered wire shank; circular; hollow; flat front; convex back; crimped joint; simple looped shank; a dog's head within a foliar border; backmarked: [Crown] EXTRA RICH QUALITY; gilded.
Keywords: Button
Object Type: Button Object Classification: Three-piece
Object Sub-classification: Decorated Object Description:
Object Inscription: Backmarked: [Crown] EXTRA RICH QUALITY Period:
Date Range: 19th century Primary Material: Copper alloy
Additional Material: Method of Manufacture: Die-formed
Surface Treatment: Gilded Condition:
Weight (grams): Size (mm): 25 mm

 

[SgtJim]

Its a Livery button. These men had very elaborate uniforms. The crown looks Tudor.

Jim

 

[CRUSADER]

Its a Livery button. These men had very elaborate uniforms. The crown looks Tudor.

Jim

sorry but its not a Livery button.

 

[Lucas]

... and the crown is clearly Victorian.