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The Index — Vintage watches, decoded.References, dials and variants up to 2000

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Omega Speedmaster Perpetual Calendar 3650.10.20 (aka: 36501020) · The Index

Brands
Omega
Speedmaster Perpetual Calendar
3650.10.20 (aka: 36501020)

Speedmaster Perpetual Calendar 3650.10.20 (aka: 36501020)

1991–1992

Speedmaster Perpetual Calendar Yellow Gold / Champagne / — photo from WatchBase · Photo: WatchBase · © WatchBase, used with permission · Source: https://watchbase.com/omega/speedmaster-automatic-quartz/3650-10-20

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Variants

No variants documented yet.

Reference specifications

Brand: Omega
Model: Speedmaster Perpetual Calendar
Reference: 3650.10.20 (aka: 36501020)
Production: 1991–1992
Case diameter: 39 mm
Water resistance: 100 m
Crystal: Sapphire

Specs shared by all variants. Variant pages show where a variant differs.

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Omega Speedmaster Perpetual CalendarRead more at Fratello (opens in a new tab)

All Speedmaster Perpetual Calendar references

Previous reference3650.10.20