Front / Recto
- Title Lightbulb (Photogram) (Glühbirne [Fotogram])
- Negative Date 1928–33
- Print Date 1928–33
- Medium Gelatin silver print
- Dimensions Image 7 3/16 x 9 7/16" (18.2 x 23.9 cm)
- Place Taken Munich
- Credit Line Thomas Walther Collection. Gift of Willys P. Wagner and Mrs. Gerald F. Warburg, by exchange
- MoMA Accession Number 1830.2001
- Copyright © Estate Franz Roh, Munich
Back / Verso
- Mount Type No mount
- Marks and Inscriptions Inscribed in pencil on sheet verso, top center: 130 [underlined]. Stamped in green ink on sheet verso, top left: dr. franz roh/münchen 39/pickelstrasse 11/telefon 60277. Inscribed in pencil on sheet verso, top left: 85281 [circled]. Signed in pencil on sheet verso, top left: FR. Inscribed in pencil on sheet verso, top left: Glühbirne (Fotogram). Stamped in black ink on sheet verso, top left: NACHLASS FRANZ ROH.
The artist, Munich; by inheritance to the artist's estate (Juliane Roh, 1909–1987), Munich, 1965 ; to Galleria del Levante (Emilio Bertonati, 1934–1981), Milan/Munich ; to a former assistant of Bertonati, Milan ; to Priska Pasquer, Photographic Art Consulting, Cologne ; purchased by Thomas Walther, October 1, 1997 ; purchased by The Museum of Modern Art, New York, 2001.
 Estate stamp on print verso.
 Priska Pasquer, telephone conversation with Simon Bieling, May 5, 2005.
 Pasquer, letter to Maria Morris Hambourg, October 28, 2013.
 Thomas Walther, telephone conversation with Bieling, June 22, 2004.
 Priska Pasquer, Photographic Art Consulting invoice, October 1, 1997.
- Format Metric
- Weight Single weight
- Thickness (mm) 0.17
- UV Fluorescence Recto negative Verso negative
- Fiber Analysis Softwood bleached sulfite 66% Hardwood bleached sulfite 2% Rag 23% Bast 6% Grass 3%
- Material Techniques Developing-out paper
This work was determined to be a gelatin silver print via X-ray fluorescence (XRF) spectrometry.
The following elements have been positively identified in the work, through XRF readings taken from its recto and verso (or from the mount, where the verso was not accessible):
- Recto: S, Ca, Zn, Sr, Ag, Ba
- Verso: Al, P, S, Ca, Zn, Sr, Ba
The graphs below show XRF spectra for three areas on the print: two of the recto—from areas of maximum and minimum image density (Dmax and Dmin)—and one of the verso or mount. The background spectrum represents the contribution of the XRF instrument itself. The first graph shows elements identified through the presence of their characteristic peaks in the lower energy range (0 to 8 keV). The second graph shows elements identified through the presence of their characteristic peaks in the higher energy range (8 to 40 keV).