What about this one? It is so yellow. Unlike any other's I've seen http://koinpro.tripod.com/Brass.htm
I have one or two like this. It has something to do with the alloy and dipping and where the planchet was in the pile and the composition of the metal and solution but I can't remember exactly how it was explained to me. Needless to say, I've kept the coin and I'd keep yours if I were you.
its possible, but i'd say yours is toned yellow as you can see copper in some areas like the rim, brass plated would show no copper, and its not usually that bright of a yellow.... http://www.error-ref.com/?s=brassy+plated
No copper shows. The rim is brass as well. There are a couple of black spots but not copper. It's hard to get a good true color pic. The whole coin is a totally different color than any copper coin I have. Ken Potter sells the "brass" planchet coins for $45.00. No 1994's though. The link you sent says they can theoretically be found for any year that has a plated coin. I wonder if Mike Ellis would look at it? I'll email him and ask if I can send it.
The brass plated planchets are just the result of using the plating solution too long. It is supposed to plate the zinc blanks with pure copper but a little zinc dissolves into the solution from each batch of planchets and eventually so the copper plating gets progressively contaminated with more and more zinc and the blanks come out yellower and yellower. And the plating is done by the manufacturer of the planchets so it isn't a mint error either.
Regardless the 1983's sell for between $25.00 to $45.00 each. I have about 30 MS 1983 brass cents I found in a roll full of 83's. 20 had a little corrosion. Even at $25 each that's a lot of dough. The 1994 I have appears to be unique as I have not read about any other specimens.
If I follow that logic then any lamination errors are worthless as well since they are errors in the planchet which was not manufactured at the mint....
Well laminations don't typically have a lot of value, and there haven't been many coins with laminations made in the past forty years since the mint closed down their last in house foundry. Laminations were much more prevalent before the 1960's and during that period the mint made most of their own ingots, strip, and planchets. So most laminations ARE mint made. (I've only seen one copper plated zinc cent that I thought might have a had a lamination in the zinc core.)