the mystery of the 176.0017, ¿resolved?
actually there are other omega 1045 models, but that is another story appears to have elements of the speedsonic [case and day-date window treatment], like nearly every italian speedmaster collector i've crossed paths with,

eBay Italia - Offerte omega, omega Orologi e Gioielli, Orologi da
OMEGA Speedmaster 1999 APOLLO 11 ed.speciale 3348/9999. Feedback: (802) 99,9% RARISSIMO crono OMEGA Speedsonic f300 Hz acciaio 1974
Omega wristwatch information presented by Steve Waddington
Omega Speedmaster professional 1975 - Operating Instructions In English. Features :- Speedmaster Pro, Speedmaster MK II, Speedmaster Speedsonic,
Faszination: Armbamduhren 4
Armbanduhr "OMEGA Speedmaster Mark III", Automat, Chronograph, Datum, Stimmgabel-Chronograph "OMEGA Speedsonic" Omega-Kaliber: 1255, f 300 Hz,
fascination: wristwatches 4
"OMEGA Speedmaster", chronograph with minutes and hours recorder, calibre: 321, 1963, ref. 105.003, "OMEGA Speedsonic", Omega calibre: 1255, f 300 Hz,
Seamaster Backs on Speedmasters
Omega had a lot of things going on: Olympic and other sporting event Omega Speedmaster Day-Date Automatic c.1045 c.1255. Speedsonic Lobstertail

Omega wristwatch information presented by Steve Waddington
Omega Speedmaster professional 1975 Operating Instructions In English. Features :- Speedmaster Pro, Speedmaster MK II, Speedmaster Speedsonic,
Faszination: Armbamduhren 4
Armbanduhr "OMEGA Speedmaster Mark III", Automat, Chronograph, Datum, Stimmgabel-Chronograph "OMEGA Speedsonic" Omega-Kaliber: 1255, f 300 Hz,
fascination: wristwatches 4
"OMEGA Speedmaster", chronograph with minutes and hours recorder, calibre: 321, 1963, ref. 105.003, "OMEGA Speedsonic", Omega calibre: 1255, f 300 Hz,
Sester Backs on Speed
Omega had a lot of things going on: Olympic and other sporting event Omega Speedmaster Day-Date Automatic c.1045 c.1255. Speedsonic Lobstertail
TimeZone: Sales Corner Archive: FS: Omega Speedmaster Speedsonic
FS : Omega Speedmaster Speedsonic 43 x 43 mm ca . Omega Speedmaster Speedsonic , Reference number : ST 188.0002 MOVEMENT Tuning fork movement .
オメガ スピードマスター・ファン・サイト「WELCOME To
とにかくオメガスピードマスター（OMEGA SPEEDMASTER）は懐の深～い腕時計です。 1957年にはじめてオメガ社からリリースされたスピードマスターは、以来50年近く
eBay: Omega, Speedmaster, Chronograph, DATE
Omega bei eBay: Speedmaster, Chronograph, DATE, Automatik, day, Michael. OMEGA SESTER Speedsonic 300 hz Chronograph. Stimmgabel Elektronik
Untitled Doent
ST 378.0801) 1973 -OMEGA SPEEDMASTER AUTOMATIC MARK IV-, CALIBRE 1040 (REF ST 176.0009) 1973 OMEGA CHRONOMETER SPEEDSONIC F 300 HZ, TUNING FORK MOVEMENT.