Real nice example. If you get it certified, I would hope they label it a “double clip” rather than the far less desirable “scrap planchet”. BTW what does it weigh?
Not a brockage, but I believe of center as part of the design is missing. The weakness intrigues me. What goes it weigh?
Broad strike on the obverse, struck in collar on the reverse. Centered strike on type 1 planchet. http://www.error-ref.com/coin-struck-on-a-type-i-blank/
The nickname for these partial collar coins is "railroad rim". Because they look like the wheels on railroad cars which are two different diameters. I find many of these partial collars on nickels.