China Oriental Clock Stamp - Need More ID

[Pocket Change]

Stamp is as scanned - I have 3 more identical to this one, but in lighter inks on same color paper. Any information appreciated.

 

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[Mackaydon]

Doesn't appear to be a postal stamp IMO.
Don.......

 

[Real of Tayopa]

it apears to me to be a chinese zodiac sign.