Need help identifying this old school lever, never seen one before?

[LIFE OF SCHWINN]

This came of a '79 SX1000
There is no stamp or sticker.
I've never seen one of these?
Anyone know who made it?
Is it a cheap thing?
Thanks,
jd

 

[mongeese]

It does not seem cheap. Needs to be figured out for sure.

 

[horizonblue]

known as a Hare trigger brake lever. Made by Hare bmx products. 1979 is the right time for these