Toolbox lock

Can someone point me in the right direction to find a lock to fit my Tool box it is on a pk125 think its a push button one as its held shut by a screw lol please see pic

 

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this is the original one:

[View:http://www.sip-scootershop.com/EN/Products/90000000/Lock+glove+box+for+Vespa+.aspx]

 

but ther's someting strange on you toolbox [H]