I came across three variations of NOS Trico vacuum check valves used in air conditioning, tilt away steering, and other vacuum powered options in various Ford/Mercury/Lincoln products. I seem to recall that some may cross over to Corvette applications.
The reason that I'm posting is that I have never seen the colors on them, although they are faint.
The first one is the single input/single output that I'm familiar with for 67. The color is the most faint of the bunch, I'll call it gold.
The second is single input/double output. This is a copper-ish color.
The third one is a single input/double output that looks like the original Star Ship Enterprise. Anyone else see the resemblance? Anyway this is clearly green. Part# 85595-69. I have not seen this one in use on any Ford that I recall.
In all three cases, the color is only on one half of the valve.
I have a single in/single out NOS Ford in the box, but don't see any color.
Has anyone noticed this before?