Yes I saw that the other day, pretty common too. Must have been a pain for dealers to have Belmont sedans and wagons and they'd had Belmont commercials from around 3/68 through to around 9/74 so no wonder they got confused.

Note this very small dealership must have been a stickler for paperwork, he has recorded the 3spd's serial number. Very few cars in the records have transmission numbers recorded.