who uses red and black?

who uses red and black markers on their bills. someone had one today and spent it without entering it as she thought it was probably one of mine. I sort of flooded the area here.

I have used red & Black, probably on 10 bills or so. Although I am from B.C…

I have used red and black…and black and blue, red and green, blue and red, brown and red, grey and red, blue and pink, blue and purple, black and brown, black and green, blue, black and red, black and orange, grey and blue….

I get bored with the same old, same old quite easily.

whoever did that anyhow is out on a hit. she just thought it was one of mine and they are not allowed to count. dr has to remove them and so she does not enter them. you cant tell whose they are until you do enter them though. not at a glance anyhow. maybe if you had time to look up the serial number

I have a stamp though. All in capitals. I use RED or BLACK or BOTH (which is kinda brown looking)