Featured John Seerey Lester drawing

Well I couldnt resist. I have had the back off and had a closer look. The heavily shaded areas reflect light like you would expect pencil to do. Also I have measured the resistance of the shaded areas with a multimeter and got a reading of around 6k ohms to 10k ohms. This kind of tallies with one website that says 5k to 40k ohms for pencil on paper. Probably the real deal. Oh and on the back of the board it says 'Entwistle Thorpe Special Art'.

Excess dried out sellotape removed, glass cleaned up and back in one piece with no major catastrophes.

 

You could also argue that an artist could remove any smudging easily enough

Reckon your gonna have to get inside, as annoying as it is, it's always pretty conclusive

Thank God for modern frames sometimes

The old ones are a freaking nightmare

 

Oh you beat me to it !!

 

Yeah I'm forever doing that, wait what now

 

I have no idea. Will have to go and do some reading

 

Pencil lead or graphite is conductive so I figured it would have a relatively low resistance if applied thickly to paper. I measured its resistance and googled what I should be expecting and it is in the same ball park. Not definitive proof but a step in the right direction.