Identify "dark blue wing" Not sure even if it is a wing or maybe it is a fin or a stabilizer or completely something else:

I have three of them
Identical pieces and also top/bottom sides are identical
No ID nor any text/graphics on them.
That's Flag 5 x 6 Hexagonal (x1435). The lack of any numbers explains why &quot;x1435&quot; was used to catalog the piece, back in time when official part numbers were unavailable. Dark Blue coloured element was available in 6 sets.