On 02-05-1954 the Warsaw 0-0 Prague match was played (see page 3). Both teams also fielded players from other cities, so this match was de facto a Poland XI vs Czechoslovakia XI match. Comparing both sides the Poland XI is close to Poland full NT, the Czechoslovakia XI a mix between A- and other players.
Poland XI: Szymkowiak - Durniok (Bartyla), Korint - Hajasz (??), Grzywocz, Siakaria - Jaziarski, Cielsik, Alszar, Piachaczak (Kempnyi), Wisniewski.
Czechoslovakia XI: Schroif - Krasnaharsky, Hledik - Jankovic, Geogh, Prohazka - Pazdara, Tibansky, Cimre (??), Kacznar (??), Kocany.
On 17-05-1954 the Prague 4-2 Warsaw match was played (see page 2). Again both teams also fielded players from other cities, so this match was de facto a Czechoslovakia XI vs Poland XI match
Czechoslovakia XI: Houska (Kablcek) - Senecky, Prohazka, Zuzanek - Helsky, Menclik (Dvorak), Urban, Müller, Masopust, Berovicka (Moravcik), Dobay.
Poland XI: Szymkowiak - Korynt, Orlowski - Hejesz, Grzywecz (Siokiora), Mamen - Jezlerski, Cieslik, Alszer (Kempny), Brychcy, Wisniewski.
Goals: Czechoslovakia XI: Masopust, Müller (both 2?). Poland XI: Cielsik, Kempny.
May be someone can translate both articles and correct the names if wrongly written. I can imagine Czechoslovakia XI prepared for the 1954 World Cup.