I hope so, $2 collar errors are fairly hard to come by. Any chance of a piccie?
This is one I have.
$2 1993 c1 Straight Partial Collar Trio
Apart from my coin, they also exist on 1994, 1999 (3 known), 2007 & 2008 (3 known), however I don't have images for those years as they're not my coins.
A friend is a present you give to yourself.