Dennis;
Something doesn't add up here.
The attached photo is of my recent purchase of an all matching number Princess phone dated 6-60, you can see plainly the it's either Aqua, or Turquoise whichever you prefer, YET, on Paul's site, it states that Aqua, and Turquoise were not introduced in the "Princess", line until 1962, and 1964 respectively. Inside of the caps, marked 6-60, inside the handset, Marked 59, the strain reliefs are marked 59, and 60 respectively, The body has no markings I can see ??
So I'm very confused, not completely convinced the color charts are 100 accurate.
Once again I'm not trying to be difficult, it's just the stated facts, do not reflect what I see in the real world. According to the color chart listed, my Princess phone was not made until between two and four years after it's dated.
D/P