Length of harness usefulness can depend on leather quality and care, storage, during the years. Well cared for leather can last a very long time, be safe to use. Attention should be given to the parts made to be replaceable, rein and saddle billets. Then check for wear at other buckle-in straps, buckle tongues for bending or rust.
Nothing feels as nice on your hands as smooth, soft, well cared for leather! But styles change, even in harness, shaping of parts, browbands, coverage, can give you an age by looking at it.
The synthetic harnesses are wonderful for their easy care properties, light weight, strength. On the minus side àre that they wear faster, never conform to the horse body like leather does as it gets used. We have both leather and synthetics, like them both for their good qualities.
Keeping russet harness brown is hard. Used often the leather absorbs sweat at different rates to show different brown colors over time. The quality of leather is usually higher than black harness because every mark on the hide shows. Can’t be covered with dye. Leather colors are matched closely when a russet harness leaves the shop. All part of why russet leather goods cost more than black items. I just saw a lovely, russet, 4-in-hand harness by Freedman for sale at $12,000! Probably is still much less than what it would cost to get one made now.