Model: Sigma Zoom 28-90mm f/3.5-5.6 Macro Aspherical lens, suitable for 35mm SLR or compatible digital bodies (mount type not verified; please confirm via photos).
Focal length: 28-90mm zoom range with macro capability at 90mm.
Maximum aperture: f/3.5-5.6 (as marked on lens barrel).
Front filter thread: 55mm, lens made in Japan, front ring marked "SIGMA ZOOM 28-90mm 1:3.5-5.6 MACRO Ø55 LENS MADE IN JAPAN".
Side markings: Normal/Macro switch at 90mm, distance and macro ratio scales, AF/M switch on the barrel, "Aspherical" marking, serial number 1045986 on the side.
Included accessory: Quantaray 55mm 1A filter (Japan) shown attached/alongside in photos.
Details: Compact autofocus zoom design, ribbed rubber zoom and focus grips, variable aperture scale, marked focal length positions (28, 35, 50, 70, 90mm), designed for general-purpose shooting with close-up macro option.
No lens caps, hood, or original packaging are included; only the lens and Quantaray filter as pictured.