3 Vintage Velvet Jewelry Boxes Black-Bambergers Red-Helzberg Diamonds- Blue vs Vintage 1940S Art Deco Helzberg's Jewelers Early Plastic Jewelry Case: which is safer?

Where these two actually differ

• We flag Azo dyes in velvet fabric, Formaldehyde in adhesives and finishes, Mold and microbial growth and Fiber shedding and inhalation on the Helzberg Diamonds and not on the Helzberg Diamonds.
• We flag Formaldehyde release (phenolic resin pathway), Plastic degradation and microparticle shedding and Moisture absorption and mold growth on the Helzberg Diamonds and not on the Helzberg Diamonds.
• The Helzberg Diamonds is velvet fabric, cardboard/wood box interior where the Helzberg Diamonds is Early plastic (likely cellulose acetate or phenolic resin), which is most of the difference in these two grades.
• These two are level, close enough that price and fit should decide it rather than our grade.