score:4
I believe this happens reasonably often (accidentally). Although having only one month between passport applications may raise some eyebrows.
Travelling with an invalid passport can lead to all kinds of inconveniences. If you make it onto the plane (e.g. if the airline has no access to a lost passport database end emigration just waves you through) and only get detected in your destination country, you might have to fly back. Or at least get into contact with your embassy.
Getting flagged as someone who deliberately uses invalid documents may lead to additional time-consuming checks everytime you need to prove your ID.
Fines for deliberately getting a second passport without turning in the old one are up to 5000 Euros where I live. We can actually get a second passport if we have a sufficient reason (e.g. want to travel to Iran but have an Israeli entry stamp in passport)
Upvote:4
There is no database "shared between all ICAO members". But Interpol operates the Stolen and Lost Travel Documents Database (SLTD).
Implementation varies widely from country to country, both on the originating side (the country which issued the passport and subsequently declares it lost or stolen) and on the checking side (countries checking documents against the database), in many respects:
Travelling with a passport previously declared lost is bound to lead you into trouble, ranging from minor delays to expensive and very inconvenient refusals of entry, not to mention being held in custody for a little while. Not recommended.