All The standard cell has been taken pending $$ for shipping Dave I have an old Weston Model 4 Standard Cell.....Free for shipping...Please "collectors " only ..if your going to just recycle it on Evil-Bay the gods of stagnant water will take their toll on you and your descendants This is long past being useful as a "transfer lab standard" but measures 1.075778 volts so the old girl girl still has some glimmer left in her. Serial number 16911.. Picture hopefully attached ( unless group does not allow) in which case email me direct for a pix manuals@artekmanuals.com Dave NR1DX -- Dave Manuals@ArtekManuals.com www.ArtekManuals.com --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus