A Group of OM Mount Lenses, including two Kiron 28mm f/2 lenses, Sigma 28mm f/2.8 lens, Vivitar 35-70mm f/2.8-3.8 (2) lenses,, 28-50mm f/3.5-4.5 lens, series 1 70-210mm f/3.5 lens, Optomax 35mm f/2.8 and an Optomax 135mm f/2.8 lens, barrels G, elements G