How do you identify your ball?

I use two orange dots, or three if it is a provisional. I remember once playing a provisional which had the same markings and number as my original and it ended in the same area of rough. Because they were both marked the same I couldn't determine which was the original and which was the provisional.
 
My initial below number or above number for provisional. Have thought of putting my telephone number with the hope of returns when found by others.
 
A long time ago after sufferning from some numpties picking up or playing my ball instead of their own, it's possible that I may have marked it in nice big bold letters something to the effect of fork off and find your ball.
 
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