There is no haze on inside of the lens. Including Lens Cap. Rear Lens Cap. I will look it for you. There is no balsam separation.
SIGMA 30mm f/1.4 EX DC HSM Prime Lens for Nikon F *Excellent+5* #5944
Sigma 30mm f/1.4 EX DC HSM for Four Thirds
Sigma 30mm f/1.4 EX DG HSM Lens for Nikon F Mount | Case, Hood & Caps | Tested
Sigma 24-70mm f2.8 DG DN II Art + Sigma 30mm f1.4 DC DN Contemporary Lens for Sony E with Sunshine Photo Accessories Bundle - 4 Years USA Manufacturer Warranty
Sigma 30mm f1.4 Contemporary DC DN Lens for Sony E with Sunshine Photo Professional Bundle - 4 Years USA Manufacturer Warranty
Sigma 30mm f1.4 Contemporary DC DN Lens for Sony E with Sunshine Photo Advanced Bundle - 4 Years USA Manufacturer Warranty
