Cool find.
I came across 5 old Bear arrows(wood) with broadheads, plus a BUNCH of aluminum arrows, some other wood arrows, a couple of quivers and a Darton 40# recurve at an estate sale this summer. There was 3 boxes with a mix of arrows and broadheads ect.
I took all the broadheads off, put field points on and then started to shoot them to see how they flew from my 55# recurve. The Bear arrows flew so nice and straight that I ended up putting the Bear broadheads back on and added them to my quiver for the late hunt . Unfortunatly I didnt get to fling any arrows.
I wont use the Bear arrows for practice, but I wont hesitate to add them to my hunting quiver. The broadheads resemble the heads on the third box from the left in your photo.