Aston Martin DB5 used in both "Goldfinger" and "Thunderball". The owner (Jerry Lee, president/owner of WBEB Radio in Philadelphia, Pennsylvania) originally bought the car from the Aston Martin company in 1969. At the auction, the DB5 was sold for £2.6 million. (£2.912m with commission) equates to $4.6m. Aston Martin announced in August 2018 that it plans to build 25 replicas of the DB5 as seen in "Goldfinger", including some of the gadgets seen in the film, each selling for about . With "Goldfinger", Corgi Toys began its decades-long relationship with the Bond franchise: they produced a toy of the car, which became the
Black–Derman–Toy model model has been shown to imply the following continuous stochastic differential equation: For constant (time independent) short rate volatility, formula_7, the model is: One reason that the model remains popular, is that the "standard" Root-finding algorithms—such as Newton's method (the secant method) or bisection—are very easily applied to the calibration. Relatedly, the model was originally described in algorithmic language, and not using stochastic calculus or martingales. Notes Articles Black–Derman–Toy model In mathematical finance, the Black–Derman–Toy model (BDT) is a popular short rate model used in the pricing of bond options, swaptions and other interest rate derivatives; see Lattice model (finance)