The Coggin Lures Copalure Invert has 12" skirt saddles with a zero-angled inverted/cupped nose with 4-hole jets. Reverse tapered with the "hump" pretty much in the middle of the head with a deep cup. Head is very similar to the Medium Copalure Invert except that it is about twice as long - same skirt saddle size. Awesome head for Marlin especially.
BOM Skirt Size 602
This particular head has three real white Mother of Pearl slabs covering the insert with a dark purple glittered back.