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Switzerland's oldest players during the 1943 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 |
|---|---|---|---|
| Walter Weiler | 38:348 | 14228 | 18 Oct 1942v Germany |
| Sirio Vernati | 36:4 | 13153 | 16 May 1943v Hungary |
| Hermann Springer | 34:191 | 12610 | 14 Jun 1943v Sweden |
| August Lehmann | 34:109 | 12528 | 16 May 1943v Hungary |
| Andre Abegglen | 34:98 | 12517 | 14 Jun 1943v Sweden |
| Severino Minelli | 33:280 | 12334 | 14 Jun 1943v Sweden |
| Georges Aeby | 32:277 | 11965 | 14 Jun 1943v Sweden |
| Lauro Amado | 31:91 | 11414 | 14 Jun 1943v Sweden |
| Willy Huber | 28:319 | 10546 | 01 Nov 1942v Hungary |
| Eugen Walaschek | 26:358 | 9855 | 14 Jun 1943v Sweden |
| Alfred Bickel | 25:42 | 9174 | 14 Jun 1943v Sweden |
| Erwin Ballabio | 24:237 | 9003 | 14 Jun 1943v Sweden |
| Hans-Peter Friedlander | 22:148 | 8184 | 04 Apr 1943v Croatia |
| Roger Bocquet | 22:36 | 8072 | 16 May 1943v Hungary |