Referenties:
http://chronomaddox.com/omega_serial_numbers.html
https://omegaforums.net/threads/caseback-reference-meaning.92098/https://wahawatches.com/how-to-identify-a-vintage-omega/
https://goldammer.me/blogs/articles/steel-vintage-watch-case-maker-guide?srsltid=AfmBOoqKdmnwdauxZp_L5Knv_lb6U7WGv1rVp2-myNonkNFvmxkjpkFZ
https://www.omegawatches.com/chronicle/1952-the-first-constellation
https://www.hodinkee.com/articles/stepping-out-from-the-shadow-of-the-moonwatch-a-look-at-the-stellar-history-of-the-omega-constellati
http://horlogeforum.nl/t/wanneer-ontstond-de-crosshair-dial-en-wat-vinden-we-er-van/277828/2
https://teddybaldassarre.com/en-int/blogs/watches/omega-constellation?srsltid=AfmBOoqF4fgC6NoJcsbO4uoCaC_CNUO0LKrAzY1_X5ckESOzJSsb53RG
https://www.lepetitsuissewatches.com/products/omega-constellation-pie-pan-crosshair-dial-dog-leg-18k-gold-ref-168-005-from-1962
https://www.fratellowatches.com/omega-constellation-watches/https://mokumwatches.com/product/omega-centenary-ref-2500-yellow-gold-from-1948/
https://www.wuwm.com/podcast/lake-effect-segments/2018-03-12/changes-at-yerkes-observatory-an-artifact-of-wisconsins-astronomical-glory-days
https://en.wikipedia.org/wiki/King%27s_ObservatoryGrafiekhttps://goldammer.me/blogs/articles/omega-constellation-guide-pie-pan










