If anyone still uses FD-mount lenses, Oxfam's online store currently has two that look interesting: 50mm 1:1.4 - £60 plus P&P, "new" FD mount. https://onlineshop.oxfam.org.uk/shop/product/canon-fd-50mm-f14-lens-hd_200344007 20mm 1:2.8 - £200 plus P&P, also new FD https://onlineshop.oxfam.org.uk/shop/product/canon-fd-20mm-f28-lens-hd_200344036 The pictures of them aren't wonderfully good, but they do offer no-quibble returns. UK postage is £3.95, not sure about overseas. My feeling is that they're a little on the expensive side, but others may disagree.