Scott US Specialized Color Cancellation Color Price Adders

If Scott lists a color with a dash "---", how much would a stamp/cover be worth with a cancellation of that color, compared to the highest dollar amount color in the table for that Scott number (e.g., the rarest color listed is green at $450, but orange has a dash)? What's a stamp with an orange cancellation worth - $500, or $1000? Yes – whatever someone will pay, but what's a good guideline, recognizing Scott values typically will have to be discounted anyway?

It does not mean rare, but does indicate that they do not have enough information to form a published value.
Don

Thanks Don.

Going to the example above, if the lowest value is blue at +$5 and the highest value is green at +$450, where would you see the ones with the dashes? Or are you saying you cannot tell anything at all from the dash?

Wouldn't the reason they don't have enough information to form a published value be because they are rare? Based on my knowledge of a couple of 19th century issues, the colors with dashes are indeed quite rare. But my Scott catalog is also getting pretty old (2004) - maybe they are different and better now.

From one northernvirginiaguy to another:

The dashes reflect a paucity of sales data upon which to determine a value, as Don says. This paucity could indeed be due to rarity, and often is. But it is not necessarily the case. The only thing(s) you can tell from the dash are that the item to which it refers is known or reported to exist, but is not sufficiently documented in the market to establish a catalog value.

Thanks all. Hopefully over time, all the dashes will be replaced with values!

Dashes indicate that the market is too small to establish a value.

Some cancellation colors, such as orange and especially brown, are extremely rare and on some issues unique or nearly so.