An anonymous trading system which enables derivative dealers to setup credit preferences based upon their own models and provides counterparties, end-users and dealers with the option of choosing to remain anonymous during a derivative trading bidding process. An interface portion is disposed between and contiguous with the stiles and the flat planar portion. The deep side sills are arranged to extend above and below the center sill of the coil car to give vertical stiffness to the coil car. The stored coupon information may also be transferred from the portable terminal to another portable terminal. Similarly, the invention finds use in the detection and quantification of a nucleic acid target using a variety of amplification techniques, including both signal amplification and target amplification.