![200: GIJS BAKKER, Pforzheim 1780 necklace < Structure & Ornament: Studio Jewelry 1900 to the Present, Curated by Mark McDonald, 12 February 2020 < Auctions | Rago Auctions 200: GIJS BAKKER, Pforzheim 1780 necklace < Structure & Ornament: Studio Jewelry 1900 to the Present, Curated by Mark McDonald, 12 February 2020 < Auctions | Rago Auctions](https://www.ragoarts.com/items/index/2000/200_1_structure_ornament_studio_jewelry_1900_to_the_present_curated_by_mark_mcdonald_february_2020_gijs_bakker_pforzheim_1780_necklace__rago_auction.jpg?t=1582743123)
200: GIJS BAKKER, Pforzheim 1780 necklace < Structure & Ornament: Studio Jewelry 1900 to the Present, Curated by Mark McDonald, 12 February 2020 < Auctions | Rago Auctions
![Otto Bakker, Bronze hatch bell with iron clapper, bell clock clock sound bronze bronze, cast Inside an iron clapper Three friezes on the top flank, the upper with bunches of grapes and Otto Bakker, Bronze hatch bell with iron clapper, bell clock clock sound bronze bronze, cast Inside an iron clapper Three friezes on the top flank, the upper with bunches of grapes and](https://c8.alamy.com/comp/R72BEH/otto-bakker-bronze-hatch-bell-with-iron-clapper-bell-clock-clock-sound-bronze-bronze-cast-inside-an-iron-clapper-three-friezes-on-the-top-flank-the-upper-with-bunches-of-grapes-and-leaf-garlands-lower-frieze-with-winged-angel-heads-and-tendrils-middle-frieze-with-inscription-casted-in-high-relief-otto-bakker-rotterdam-1748-metal-casting-communication-sound-R72BEH.jpg)
Otto Bakker, Bronze hatch bell with iron clapper, bell clock clock sound bronze bronze, cast Inside an iron clapper Three friezes on the top flank, the upper with bunches of grapes and
![Otto Jan BAKKER | BSc, MSc, PhD | The University of Manchester, Manchester | School of Mechanical, Aerospace and Civil Engineering Otto Jan BAKKER | BSc, MSc, PhD | The University of Manchester, Manchester | School of Mechanical, Aerospace and Civil Engineering](https://i1.rgstatic.net/ii/profile.image/276896735612930-1443028734046_Q512/Otto-Jan-Bakker.jpg)