old unit. Hard to read model number on the data plate.
The number you gave (355980) means nothing. Don't know what that is.
On Lincoln ovens, the important numbers (model & serial numbers) are usually stamped into the metal data plate. So even if the silk-screen printing is missing, you should still be able to read the embossed information. If it's gotten crusted up over the data plate, take a Scotchbrite pad and scuff all the crust off there so you can read the impressions in the plate.
After you do this, take a clear close-up photo of the entire plate, then post it here so it can deciphered.
FYI: On the data plate, a four-digit number in the upper-left of the data plate should be the model. On early ovens, that all there is.
If yours is a later model oven, there may be several hyphenated groups of letters and numbers following the initial four numbers. If that's the case, then ALL of THAT is the model number. Then...the oven's serial number will be located well to the right of the model number. Other important info that will be needed off the data plate is the oven's rated voltage and the number of phases (1 or 3).
All in all, the more info you can provide, the better - in order to identify what specific heating element you need.
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