welcome
@ash9988777
OF is a global forum -
@STANDY is in Oz and
@Dan S and
@gatorcpa are in the States.
As mentioned above, black dialled watches are a minefield.
Black dialled Constellations were a special order watch and as such there were fewer made.
90% of blacked dialled Constellations you will find online will be redialled watches - some very obvious, others less so.
There is no one place to find a particular watch and you will likely be waiting some time to find a genuine black dialled watch - and even then you will be in competition with a lot of others, so they sell at a premium.
The 168.016 you picture is nice enough but has seen some polishing.
"case original vintage condition - unpolished - small mini minor scratches but apart from that it looks like new!"
This is clearly untrue
Each to their own on desirability but this style of watch isn't as desirable as other Constellations and the day-date makes it less desirable again.
Both the polishing and the reference means the watch should be priced accordingly and that should be significantly south of £1000. (although if it has been serviced properly that does hold ~£200 value to the buyer)
(FYI - relative to condition and reference, in order of desirability and price - Gold cap, steel, solid gold)
Best thing is to identify a reference and style you really want and focus on learning all about that reference - you will then be better armed to choose a decent example (and by all means post here for comments)