This is the one rupee coin of 1982, the Wheat Ears definitive design struck at the Bombay Mint under Republic India coinage. Definitive coins like this circulated widely, so finding one in top condition today is the part that interests collectors.
The value of a definitive rupee is driven far more by grade than by age — a genuinely uncirculated example with full lustre and crisp wheat-ear detail stands well above the same coin worn from use. Year, mint and the sharpness of the strike all feed into where a particular piece lands.
Coinbazzar lists verified 1982 one rupee coins with clear images, so you can assess the condition and detail before buying the exact coin featured with this video.