Late model Hetzer

[Flying10uk]

With all this talk of plastic model kits, it's got me wondering what the longest amount of time anyone has spent making/assembling a plastic model kit?

I've got a kit, The Visible Man, intended for medical students/Doctors etc that was purchased when it first went on sale in the UK in the late 1950's/early 1960's. The kit was nearly assembled/completed in the 1960's but never fully finished. Since then it has been "trampled in the attic" with "bits broken" and some of the model's internal organs mysteriously went missing. Since inheriting the kit, several years ago, I have sourced some replacement parts for some of the bits that are missing/broken and I have carried out a little bit of work on the model but it is still not fully completed some 60 years after purchase. It's mainly some bits requiring painting that I haven't got round to yet.