"Cutie Mark" is a new term for me. It refers to My Little Pony and is FAR too cutsie for me or for this story as a matter of fact.
|Maori "cutie mark"|
My initial reaction is that Frank would not have a tattoo, not because I don't like them, but because it seems fairly cliche for a "modern cowboy" to have a tattoo.
I think if anything he would have a brand on his chest, over his heart. Because it's a brand it can't be as elaborate as a tattoo. It would be a lantern for his never ending vigil for truth, knowledge and love.
He doesn't have a brand. He doesn't because a) he doesn't need to prove how tough he is, b) a brand is something you put on cattle and he is certainly not part of any herd. He is "owned" by his search, drive and determination, but he thinks in his own mind and heart that he owns that drive, not the other way round.
He does have scars and they are tattoo enough for him.