Kelvin Pang sur Twitter : "#ステッドラー Staedtler Mars Technico 780 ver. 1 (?)… with 'complex clip', circa 1970s. Only one pencil is slightly yellowed. #vintage #leadholder #芯ホルダー https://t.co/f0r3uRM1CO" / Twitter
Mars technico Archives - Bleistift
Staedtler Mars Technico 2mm Clutch 780 Lead Holder Degree Indicator On Clip | eBay
STAEDTLER 780 C BKP6 Mars Technico Mechanical Pencil with HB Lead and Eraser,Black : Office Products - Amazon.com
A2 DRAWING BOARD - STAEDTER 960 MARS TECHNICO | in Strathaven, South Lanarkshire | Gumtree