Vintage Technology:  Wanted

Bits and pieces of Vintage Technology that I'm after - make some money by dropping me an email.  I can pay by cash, cheque or internet payment systems.  I will need to see photographic evidence and a payment reference (or ebay handle and rating will do).  Do not throw any scrap 1970s calculators away (or look them over in a car boot sale)  - I will probably buy them for spares.