| 4 | ECSC High Authority: Decision No 4-53 of 12 February 1953 on the publication of price lists and conditions of sale applied by undertakings in the coal and iron ore industries | 12 Feb 1953 |
| 30 | ECSC High Authority: Decision No 30-53 of 2 May 1953 on practices prohibited by Article 60 (1) of the Treaty in the common market for coal and steel | 2 May 1953 |
| 31 | ECSC High Authority: Decision No 31-53 of 2 May 1953 on the publication of price lists and conditions of sale applied by undertakings in the steel industry | 2 May 1953 |
| 32 | ECSC High Authority: Décision No 32-53 of 20 May 1953 supplementing Décision No 31-53 of 2 May 1953 on the publication of price lists and conditions of sale applied by undertakings in the steel industry | 20 May 1953 |