[michael cumming]

I have alot in my collection, You could be right there Paul about them wanting to promote Zinc Carbon but the only way they could make them last longer was adding a bit more electrolite, i am sure they did this later on with silver seal but i also have two D cells in black with Power plus on, later pones were black and red, was this an early attempt Zinc Carbon. things which used motors would need a battery to last longer.

I have two D cells the same with the Berec logo from Ever Ready but one has instructions for use an the other does not, both are high power batteries.