Can I get help identifying this pencil?
The listing had the information below, but I wonder if something got lost in the translation. I have been googling these terms and haven’t found anything.
I am trying to find out when these were sold. Does anyone know if these have shown up in any catalogs we can access?
I don’t have any slide sharp catalogue (looking forward to someone sharing it), but I know the model number of this pencil because I once had its packaging. The red one (in the picture) is NS500A #19, and the blue one is NS500A #49.