As @Gunther showed, it is bigraph. Famous pencil, similar to Staedtler Mars-Micrograph HS. I wouldn’t be surprised if it was a rebranding of Staedtler (or vice versa).
As @Gunther showed, it is bigraph. Famous pencil, similar to Staedtler Mars-Micrograph HS. I wouldn’t be surprised if it was a rebranding of Staedtler (or vice versa).