Genuine Omega® stud for hairspring, part number 1317, base cal. 470 (see all calibres in description) Omega® 47.7 NN Second Wheel FHS 131 Strike

Second Wheel FHS 131 Strike is the second wheel next to strike barrel #33

one in each hand

Omega® 562

Genuine Omega® crown wheel part number 1101

Brushed Steel

Genuine Omega® stud for hairspring, part number 1317, base cal. 470 (see all calibres in description) Omega® 47.7 NN Second Wheel FHS 131 StrikeGenuine Omega stud for hairspring, part number 1317 Fits calibres: Omega 470 Omega 471 Omega 490 Omega 491 Omega 500 Omega 501 19p Omega 501 20p Omega 502 Omega 503 19p Omega 503 20p Omega 504 Omega 505 Omega 550 Omega 551 Omega 552 Omega 560 Omega 561 Omega 562 Omega 570 Omega 571 Omega 590 Omega 591 * Perrin Supply Ltd is independent of and not affiliated with or sponsored by Omega. Omega warranty does not apply to parts supplied by Perrin Supply