LOUISIANA PACIFIC INNERSEAL SIDING ID PAGE:
The Identifiable knot:

Look close you will see the letters of "L" in the top left of the knot and "p"in the lower right side of the knot.
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Back of LP Inerseal:

Made of approx 1" strands of wood.
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2nd generation LP had a resin backing, dark in color:
This was manufactured in 1995 -August 1997

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NEW SMART LP LAP:
Came out in September of 1997

Although the above photo is new LP it is what LP Innerseal looks like as well.