I’m no expert but have passing looks at pocket watches and Master Time clocks, which crosses over into stopwatches and dashboard clocks.
The Monte Carlo looks to be in good condition and they go for €1300-1600 I think privately.
The stopwatch is a 512.902 and worth a few hundred Euros would be my guess.
If it were me and you really loved them getting both for 1500 would be a good deal I think, but some online searching should help you figure out the current values.