Chris, you're correct, I also have a Plus 1 and I was getting it mixed up with my Plus 2!! D'oh!
I understand that issue; they do look like siblings, don't they?
In the factory we have hundreds of Netduinos at a time stacked on white (ESD) tables for the testing and packaging process. Because different Netduinos look so consistently alike, our factory policy is to only work with one board model per table at a time--lest Netduino Plus 1s accidentally get mixed in with Netduino Plus 2s, etc.
[More specifically the flash-and-test process would flag the almost-doppelganger; critically this process ensures that the right boards go in the correctly-labeled packages.]
I'm glad that you have an NP1 to keep your NP2 company