is this SC 3 factory

hope the links work , I noticed this on ebay , SC 3 with two single coils and what looks like a F100 humbucker .... is this a factory set up ?? ... looks cool anyway

http://www.ebay.com/itm/1981-G-L-SC-3-g ... 411wt_1170

Elwood just started a thread about this guitar. Unless this was some sort of employee guitar, it did not come from the factory with the HB in the bridge.