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Switzerland's oldest players during the 1939 season, and their age in years and days on the occasion of their final appearance, starting or coming on as a substitute.
For each player age is given in days, and in years and days, from their date of birth.
| Player | Age (Y:d) | Age (days) | Match |
|---|---|---|---|
| Sirio Vernati | 32:23 | 11711 | 04 Jun 1939v Poland |
| Adolf Stelzer | 30:254 | 11212 | 14 May 1939v Belgium |
| Hermann Springer | 30:181 | 11139 | 04 Jun 1939v Poland |
| August Lehmann | 30:128 | 11086 | 04 Jun 1939v Poland |
| Andre Abegglen | 30:88 | 11046 | 04 Jun 1939v Poland |
| Severino Minelli | 29:249 | 10842 | 14 May 1939v Belgium |
| Georges Aeby | 28:246 | 10473 | 14 May 1939v Belgium |
| Lauro Amado | 27:81 | 9943 | 04 Jun 1939v Poland |
| Ernest Lortscher | 25:186 | 9318 | 18 Sep 1938v Republic of Ireland |
| Willy Huber | 25:105 | 9237 | 02 Apr 1939v Hungary |
| Albert Guinchard | 24:94 | 8860 | 12 Feb 1939v Portugal |
| Eugen Walaschek | 22:285 | 8321 | 02 Apr 1939v Hungary |
| Alfred Bickel | 21:32 | 7703 | 04 Jun 1939v Poland |
| Erwin Ballabio | 20:227 | 7532 | 04 Jun 1939v Poland |