My own private stash of spoilers.
View attachment 292
I've got a date code anomoly. The outside of the box clearly has 1981 on it, but the code on the blades is PP2, also the packaging looks signifcantly older than RMs 1981 spoillers.
Could 1981 be a product code and the date code is actually 1970?
$1.69 seems to high for blades that old, are they newer? P would put them in 1995, seems to match the price on the packaging.