# The Ter Borch research lead

## Why this is now a specific question

**SOURCE-REPORTED.** Sotheby's 2005 lot 141 records a pencil inscription `Terburg` on the large chalk drawing associated in the current research record with RKD 116036. Sotheby's nevertheless retained the object as Dutch School, seventeenth century; it did not call the mark an authenticated signature or attribute the sheet to Gerard ter Borch.

The inscription therefore provides an object-specific reason to investigate a Ter Borch association and the comparator's attribution history. It does not name the present sheet, prove a hand, or identify a sitter.

Three supplied crops now make the evidentiary position more precise: an RKD monochrome crop (281 × 134 pixels), an RKD colour crop (249 × 135 pixels), and a Sotheby's PDF crop (381 × 208 pixels). **OBSERVED:** each is a reproductive view of the same reported inscription area, with faint cursive marks, limited tonal separation and reproduction pattern/halftone. They make the reported reading available for scrutiny; they do not authenticate a signature, identify its writer, date the addition, or turn three reproductive witnesses into three independent signatures.

## Controls and their qualifiers

- **Gerard ter Borch II:** Boijmans H 223 and Städel 926 carry unqualified institutional names, but do not establish a common author with the present sheet. Cleveland 1941.603 offers a useful black-chalk-and-white comparison and records a verso name; the record does not authenticate that name as a signature.
- **Qualified Städel group:** Städel 924, 2917, and 2916 display `Gerard ter Borch the Younger ?` and retain `Moses ter Borch — by note on mount` as an alternative. These qualifiers are part of the evidence, not editorial clutter to omit.
- **Studio control:** Sotheby's 2022 lot 169 is catalogued `Studio of Gerard ter Borch II`. Its note reports that Kettering placed a related group with an unidentified student, not securely with Gerard or his family. It is a workshop-boundary control.
- **Moses ter Borch:** Rijksmuseum self-portraits provide documented examples of black and white chalk on blue paper. Other Moses controls carry qualifiers. Shared media and youthful figures are useful comparisons, not authorship tests.

## Repetition and transfer

**SOURCE-REPORTED.** Städel 2916 is catalogued as a `copy` and `decalcomania`; its German record calls it `Rötel (Abklatsch)` and presents 2917 as the related reference. The two sheets have close dimensions, while both retain qualified authorship and a Moses alternative.

This documents a particular counterproof/copy relationship in a Ter Borch-associated group. It does **not** demonstrate that the present sheet is a counterproof of RKD, that their scale relation has the same cause, or that Gerard made either sheet.

Korevaar and Tauber's study of repetition and transfer in documented Ter Borch works gives additional historical context. It does not analyse the present sheet or RKD 116036.

## Inscription controls and a language discrepancy

The Rijksmuseum records a Gerard drawing explicitly described as signed by the artist; that is a useful category control, not an authentication of `Terburg` elsewhere. Other museum fields use terms such as `mentioned on object`, `signature`, and `annotation`, which must not be treated as interchangeable.

Fondation Custodia inv. 5111 preserves a verso `v. J. Terburg`, but its English and French pages differ over whether the marks are described as pencil or brush. The public conclusion should be confined to a verso inscription, without using the stated medium as technical evidence.

## Proper scope of the hypothesis

**INFERRED.** The available sources justify a focused question about whether the RKD design has a connection within or around the Ter Borch family/workshop. **UNVERIFIED:** whether the RKD object is by Gerard, Moses, a pupil, another artist, or a later copyist; whether the present sheet shares its author; and whether the inscription predates the drawing's later history.

**References:** Sotheby's 2005 lot 141, p. 159; Boijmans H 223; Städel 926, 924, 2917, 2916; Sotheby's 2022 lot 169; Cleveland 1941.603; Rijksmuseum controls; Kettering (1988), located but not fully read; Korevaar and Tauber (2014).