Im thinking about buying about 500-600 euros... but suspicious dial, replaced crown and poor movement hold me back. is it early version of polerouter or bad redial? Thanks in advance!

 

It looks like a 20363-X.
Compare it to the Reference Gallery photos... your first impression is probably correct

 

Why would you be tempted to buy it even if it were an original dial?

 

Run away...

 

Buying this watch is akin to taking the money and throwing it into a trash bin.