BBurns wrote:
This is electronic grade rosin core solder. Brand name is most probably 'Kester'.
The large diameter stuff is not in that much demand. The paste is is more common.
Being an old radio tech, I would be interested if your price is reasonable.
A plumber only uses acid core solder.
Have you checked the price of rosin-cored solder? It is extremely expensive. Old does not apply to solder it is okay forever. Ask an Amature radio operator, I am sure they would gladly pay something for this