Thanks for the clear photo of the data plate, it tells us a lot. A model number that starts with 911 means the range was built for Sears by Roper, which made most Kenmore ranges for decades from its plant in Kankakee, Illinois. Your 911.9107810 is a 240-volt electric range rated at 12.6 kW.
Short answer: most likely the late 1970s
Sears and Roper never published a decoder for serial numbers of this age, and our online Kenmore age lookup can’t date 911 models for that reason. But the plate itself gives strong clues:
- The serial number starts with “7”. On Roper-built units of this period, the first character usually stands for the last digit of the production year. Together with the other clues, that points to 1977.
- The plate style. The brushed-metal plate with embossed numbers, the “Mfd. in the U.S.A. for Sears, Roebuck & Co.” line and the “In all correspondence in regard to this unit…” wording were used on Kenmore ranges from the 1960s through the late 1970s. In the 1980s Sears moved to printed paper or foil labels.
- The 11-digit model format (three-digit maker code plus an eight-digit model) is from the same era.
So 1977 is the best estimate. Because “7” could in theory also mean 1967, use the check below if you need a firm date.
How to confirm the year yourself
Many parts inside the range carry their own date stamps, and they will all be within a few months of the build date:
- The wiring diagram, usually folded behind the lower kick panel, inside the back panel, or behind the storage drawer, often has a print date such as “3-77” in a corner.
- The clock/timer and the infinite switches behind the knobs are often stamped with a date code.
- The oven elements sometimes have a date stamped near the terminals.
Turn off the range’s breaker before removing any panel. A 240 V range can be dangerous even with the knobs off.
What the age means for you
Ranges from this era were simply built: elements, infinite switches, a thermostat and the clock. Many are still working fine after 45+ years. A few things are worth knowing:
- Parts: universal surface elements, bake and broil elements, and infinite switches are still easy to find. Original clocks, knobs and trim are harder and often come from salvage.
- Safety checks: look at the power cord and terminal block for brown or melted spots, and check that the cord is a 4-wire cord if your outlet is 4-prong. On a range this old, have the oven thermostat checked if it runs noticeably hot.
- Replace or keep? If it works and the wiring is in good shape, there is no reason to replace it just because of its age. Replacement makes sense if the oven temperature can’t be held, the wiring is damaged, or you want features like self-clean or a sealed cooktop.