Seattle Everett Zürich

The House receives keepers by appointment, Tuesday to Saturday

Rosen The Rosen Association Seattle 1911

The Register of Provenance

Verify a certificate

Enter the number written on the first page of a certificate, or engraved on the base of a piece. The check is made against a public index of the Register, kept in this page, and nothing you type leaves your browser.

For example 118 204, or P 30 117 for a Penfield Mk IV. Spaces do not matter.

What the check tells you

The check confirms whether the house has issued a certificate with a given number, and says what kind of piece it belongs to. It never shows the name of a keeper, the price paid or anything else the house holds in confidence. Certificates issued before 1979 are confirmed by period rather than described one by one; the Archive can tell a keeper more.

If the check says a number has not been issued, the house has not issued it, and a piece that bears it is not a Rosen piece, however closely it resembles one. The Provenance Office would be grateful to hear about any such piece, and will not ask who owns it.

Where to find the number

  • On the first page of the certificate, beneath the house mark.
  • Engraved on the base of every piece made since 1979, and on the base plate of every Penfield instrument, with a P before it.
  • On heritage pieces, scratched inside the case or under the plinth, usually beside the house mark. The Archive can help if it cannot be found.

How the numbers run

Certificate numbers in the public index
NumbersIssuedPieces
114 March 1911The Register itself
2 to 9 1131911–1979Heritage pieces, clocks and commissions
9 114 to 10 2181979–1993Penfield tone cabinets, Mk I
10 219 to 118 2031979–2019Penfield Mk II and Mk III instruments and other pieces
118 2042 October 2019The Rosen Owl
120 001 to 122 3182021–2024Nexus-6 units; held by the Recall Office
P 1 to P 61 4122024–2026Penfield Mk IV instruments, in their own series

If the check disagrees with your certificate

Write to the Provenance Office at provenance@rosenassociation.org with a photograph of the certificate’s first page. The Registrar compares it with the bound Register, which is the authority whenever the two disagree, and replies within the week.