Michael
Pattern Altitude
Take a look at this Ebay Mooney It is listed as a E. I thought the small rear seat windows were on a, b and c models only, pre 65ish. Is this listed correctly?
50054727 MFR Year
1963
They did. An M20E was on the cover of the December 1963 Flying magazine. M20Es were introduced for the 1964 model year, which like with automobiles, started sometime in mid-'63. The FAA registration database reflects actual calendar year of manufacture, not the model year. M20Es built for the '64 model year had the old-style windows (see images in my post above).I did not think them made M20Es in 63.