The 105 was built from 1967 to 1969, it is a 10-hp Kohler engine, hydrostatic drive transmission. Manual lift (hydrostatic lift was not available yet) but could have optional electric lift. 3-point sleeve hitch was optional. Could have a 38" or 42" mower deck (although a 48" can bolt to it, the 10-hp engine would have a tough time running it). Many different tire widths and treads were available. Should have a white-fiberglass seat with white vinyl cushon and blue piping, however, many of these are long gone and the seat has been replaced. Finding one with the original fiberglass seat is a plus.
Although not a great photo, here is a 124 that I restored (12-hp gear drive) but otherwise the exact same tractor as the 105.
Here is another photo (again, not great) but showing the 124 from the side (prior to restoration)
1951 Farmall Cub, Cub Cadets 102, 104, 1811, 1864, Simplicity Legacy XL 4x4 Diesel with FEL, 60" mower, 50" Tiller