Day 29-Dusty Rose
Dusty Rose was also made from 1988 to 1990. That is because Dusty Rose is Plum cased in Crystal. The color from Day 12 was Orchid. I can’t tell Orchid from Dusty Rose by sight. I am relatively sure that this is Dusty Rose because it has the B with the orange ball label on it. Dusty Rose must have this label which was used from 1983 to 1999. The orange B label is “necessary but not sufficient” to determine the Dusty Rose Color. The best advise I can give you to differentiate between the two colors is to look at the colored layer at the bottom where the clear casing is most obvious and if you can be confident about that color being Plum or Amethyst then you can be confident about whether the cased color is Dusty Rose or Orchid. My previous Orchid example I am sure of because it has the silver hand oval label (and is dated 2003 on the bottom.)
Labels, when present, can be a great help in determining which color you have. The foil silver hand was introduced in the 30’s and was used until 1982. The B with the orange ball sticker was introduced in the catalog for 1983 and was used until 1999. Since the year 2000 Blenko labels have been a silver hand in an oval of plastic. If a label is present on your water bottle it can pare down the color choices, so often you can be sure of a color which would remain in doubt without the label.