Reform Boehm System
| Bosch Leon | Netherlands Philharmonic Orchestra Amsterdam (NL) | A/B - V-420 C - 1020 F-Bassetthorn- 1120 |
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Colbers Hans | Resident.Orkest Den Haag (NL) | A/B - V-420 A -425 (Bassettclar.) |
| de Boer Harmen | Netherlands Radio Symfony Orchestra Hilversum (NL) | A/B - V-420 A -425 (Bassettclar.) |
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| Douwes Sief | (NL) | A/B - V-420 |
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| Gerris Theo Prof. | (NL) | B - V-420 |
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| Gold Cecil Dr. | Prof. University of Idaho (USA) | B - V-420 |
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| Goldstein Yinon Liza | Nordwestdeutsche Philharmonie Herford | A/B - 420 |
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| Kapaan Roeland | Nederlands Politie Orkest (NL) | A/B - V-420 |
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| Klumpenaar Marlies | Badische Symphonie Solingen | A/B - V-420 |
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| Jimenez Ivan Hernandez | Orchestra Valencia (E) | A/B - V-420 |
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| Meertens Jaques | Koninklijk Concertgebouworkest Amsterdam (NL) | A/B - 420 |
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| Maggioni Silvio Prof. | Consevatorio Statale di Brescia (I) | A/B - 420 |
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| Onrust Eric | Noord Nederlands Orkest Groningen (NL) | A/B - 420 |
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Piters Arno | Koninklijk Concertgebouworkest Amsterdam (NL) | A/B - V-420 Es - 620 |
| Peulers Jos | Muziekschool Ost Gelderland (NL) | B - V-420 |
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| Rijks Kim | Noord Nederlands Orkest Groningen (NL) | A/B - 420 |
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| Salm Jeroen Thè | Principal Netherlands Theatre Orch. Amsterdam (NL) | A/B - 420 |
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| Schutte Lili | Netherlands Radio Symfony Orchestra Hilversum (NL) | A/B - 420 |
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| Troquet Harrie | Netherlands Philharmonic Orchestra Amsterdam (NL) | A/B - V-420 C - 1020 F-Bassetthorn- 1120 |
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| van Koetsveld Tamara | (NL) | A/B - 420 Es - 620 |
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| van den Brink Frank | Netherlands Radio Symfony Orchestra Hilversum (NL) | A/B - 420 |
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| Whight Michael Prof. | Royal Philharmonic Orchestra London (GBR) | A/B - 420 |
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| Vos J. Ab | Resident.Orkest Den Haag (NL) | A/B - 420 |
