I realise I am not helping, but you could save 30 euros by avoiding ebay...
https://www.velosaloon.com/collections/vintage-frames-vintage-rahmen/products/gazelle-criterium-frame-in-56-cm-c-t-54-5-cm-c-c-with-reynolds-531-tubing-1
@Five-Hats started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
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I realise I am not helping, but you could save 30 euros by avoiding ebay...
https://www.velosaloon.com/collections/vintage-frames-vintage-rahmen/products/gazelle-criterium-frame-in-56-cm-c-t-54-5-cm-c-c-with-reynolds-531-tubing-1