He may be grumpy but he's your grumpy cat.  He'll stay grumpy even when you hold him tight but don't you dare let him go because he loves you deep inside! 
 
1.25"  enamel pin, polished gold colored plating
Pin back is 8mm post with clutch
Pinned on a 4 x 2.5 backing card, sealed in a clear protective bag.