I bought 8 august 2016 a barrel offered on eBay from an Italian supplier “fabrizio Durando” e-mail at that time
speedmarco@libero.it . Once in a while there are more to be found even full sets (=including the door locks with the one and only same key).
Mine was an Original NEIMAN and it was in a brand Valeo (greenish) box Ref.: Valeo 252046 BA056 “Blocchetto Antifurto Peugeot Talbot/Murena/Rancho originale”. PRICE €49,90 plus €20 shipping and hAndling, so totalling €69,90 I just took out the old lock with the old key in it - I believe only half turned - so not fully in starting position because only then you were able to push the retaining spring within the steeringcolumn in to liberate the ignition key barrel. So I bought only the ignition barrel.
In othe languages:
Franch : Antivol UK : Column lock German: Lenkradschloss Spanish: Anti-robo Dutch: Stuurslot
Maybe an BA058 could be fitted as well, but that I cannot confirm.
Wish you luck.
Kind regards from Belgium
Guido