I have a 1939 Pontiac eletric clock in my '39.Its face matches the later cream faced '39 instruments, which were the same as a '39 Pontiac. and has red hands.Will not be of help in this department.
Going by pictures in my 1939 accessory info. both the eletric and wind '39 clocks have the red dots.Both the numbers and dots are on the face of the clock, behind the hands.Its common to see a 1938 clock installed in a '39.It had the numbers either on the glass or on the raised area around the face.The cream dots are on the face behind the hands and numbers are on the raised area or glass more or less in front of the hands.Also picture I have show both the eletric and wind clock for '39 to have the knob in the front -the '38 has it in the rear.Knob is the square tan job that matches the choke knob, etc.The problem is Chevrolet used more than one supplier of clocks and they all may have been different.The info. I have lists the ele. clock as being made by NewHaven Clock co.The '38 ele clock and the '39 wind clock are also shown with straight hands, the 1939 ele. shows tear drop shaped hands.
The filling Station Decal looks correct for the '39 wind or ele. clock-but they describe it as having a black back ground and it should be dark brown as are the other instruments.
Hope I didn't confuse you
