Has anyone seen this marking?

[Shvegel]

Hi,
I have a pretty good memory and I remember when I rebuilt my engine 15 years ago there was a red "C" shaped paint stamp or marking on the right (passenger for LHD) side of the engine block.  At that time I really didn't care about originality and simply painted over it but in the meantime the engine is getting ready for a detailing and re-installation and I was wondering if anyone had seen this red "C" mark and could post a picture?

[Shvegel]

I think I might have figured it out.  Since the block was primered red I bet the mark I saw was where it was clamped into the fixture when it was painted.

[Pinder]

I just painted my engine, I also noticed a bright red mar about the size of a thumb print on it. it was more red that the undercoat. I have many pics taken so ill see if it shows up in the pics and if it does will send you one,

[Pinder]

Is this the mark you are talking about. It was a much brighter red than the primer on the engine

[Shvegel]

That's the one!  Now I know where to look.