Precise Professional Cuffs

I have a set of Precise Professional Cuffs, Style No. 81453, in the original box. Mint condition, I know the approximate era 1970-1980's but what is the value? Just curious, I am not a collector but would like to know what I have. Any one have any idea?

I'd say about $15.

Look on a chain-link for "Taiwan" or "Japan"