| PV De Zwaluw | ||||||||
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| Zwaagwesteinde | ||||||||
| Ringenlijst 2021 | ||||||||
| Gewone ringen | Derbyringen | |||||||
| 1458921 | - | 1458980 | A.Alma | 1460391 | - | 1460395 | L.F. de Bruin | |
| 1458981 | - | 1459000 | H. vd Bij | 1460396 | - | 1460400 | J.Postma | |
| 1459001 | - | 1459100 | B&E Dijkstra | 1460401 | - | 1460405 | J.Rottiné | |
| 1459101 | - | 1459200 | P.Broersma | 1460406 | - | 1460410 | Tj. Plantinga | |
| 1459201 | - | 1459300 | Comb. Smid | 1460411 | 1460415 | H. van Kammen | ||
| 1459301 | - | 1459400 | Dj. vd Veen | 1460416 | 1460420 | P.Broersma | ||
| 1459401 | - | 1459600 | J.Rottiné | 1460421 | - | 1460425 | B. de Roos | |
| 1459601 | - | 1459630 | S.Bijlstra | 1460426 | - | 1460430 | P. van Leijen | |
| 1459631 | - | 1459700 | H. van Kammen | 1460431 | - | 1460435 | A.Wijbenga | |
| 1459701 | - | 1459730 | G.J. Elzinga | 1460436 | - | 1460440 | Dj. vd Veen | |
| 1459731 | - | 1459800 | Tj.Plantinga | 1460441 | - | 1460445 | Comb. Smid | |
| 1459801 | - | 1459830 | H.Feenstra | 1460446 | - | 1460450 | B&E Dijkstra | |
| 1459831 | - | 1459900 | B.P. de Roos | 1460451 | - | 1460455 | DeBruin-Hiemstra | |
| 1459901 | - | 1459955 | J. van Kammen | 1460456 | - | 1460460 | A.Alma | |
| 1459956 | - | 1460000 | P. van Leijen | 1460461 | - | 1460465 | A.Bosma | |
| 1460001 | - | 1460050 | L.F. de Bruin | 1460466 | - | 1460470 | H.Feenstra | |
| 1460051 | - | 1460100 | J.Postma | 1460471 | - | 1460475 | B.P. de Roos | |
| 1460101 | - | 1460185 | A.Bosma | 1460476 | - | 1460480 | H.Postma | |
| 1460186 | - | 1460200 | A.Volbeda | 1460481 | - | 1460485 | Tj. Visser | |
| 1460201 | - | 1460240 | M. van Kammen | 1460486 | - | 1460490 | M.Wiersma | |
| 1460241 | - | 1460280 | J.G. vd Meulen | 1460491 | - | 1460495 | S.Kempenaar | |
| 1460281 | - | 1460320 | B. de Roos | 1460496 | - | 1460500 | H.Jilderda | |
| 1460321 | - | 1460360 | Tj. Visser | |||||
| 1460361 | - | 1460390 | H.Jilderda | |||||
| 1460391 | - | 1460500 | Derbyringen | |||||
| 1460501 | - | 1460540 | P.Broersma | Friese Fondclub | ||||
| 1460541 | - | 1460690 | A.Wijbenga | 4222081 | - | 4222105 | B&E Djkstra | |
| 1460691 | - | 1460715 | E.D. vd Bei | 4222106 | 4222180 | M.Wiersma | ||
| 1460716 | - | 1460860 | DeBruin-Hiemstra | |||||
| 1460861 | - | 1460915 | S.Kempenaar | |||||
| 1460916 | - | 1460980 | H.Postma | |||||