KcDano,
Yes it is an early Jim Pfeffer, believed to be his first bait, carved in the mid to late 1920s. It is also believed to be the origin of his famous "Orlando Shiner" paint scheme.
However, it is not a bluegill, but a sunfish. Close enough, I'll give it to you.
JSC,
Good eye! The Nip-I-Diddee 910 SH was definitely an attempt to create a mass-market version of the Pfeffer Orlando Shiner. However, South Bend was not the first to "borrow" the shiner paint scheme. Several Orlando area makers primary lure was the Orlando Shiner, which was a variation of Pfeffer's.
The South Bend adaptation was used on the the Diddee family along with the Bass Oreno. This paint scheme became known as the Spotted Ape and was used by several major makers, including:
Heddon (Lucky 13)
Arbogast (Jitterbug)
Smithwick
Boone
York/Rhoden
and some guy named Mallard
You're up KcDano