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Switzerland's oldest players during the 1929 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 |
|---|---|---|---|
| Max Weiler | 28:201 | 10428 | 14 Apr 1929v Hungary |
| Walter Weiler | 24:363 | 9129 | 01 Nov 1928v Hungary |
| Frank Séchehaye | 21:134 | 7805 | 17 Mar 1929v Netherlands |
| Andre Abegglen | 20:59 | 7364 | 05 May 1929v Czechoslovakia |