I have just purchased this GP Ferrari model secondhand and I would very much appreciate it if someone knowledgeable could tell me something of its movement, design, value, etc. In the image it appears all gold but it is in fact steel gold bimetal with a gold bezel and gold in the inserts within the links. On the back as well as the Ferrari logo and text it has BJ No 47 and Ref. 8025 Many thanks.