This Court, speaking through Shah, J., observed: "Assuming that in appropriate cases, fixation of a date anterior to the publication of the notification under section 4(1) for ascertainment of market value of the land to be acquired, may not always be regarded as a violation of the constitutional guarantee, in the absence of evidence that compensation assessed on the basis of market value on such anterior date, awards to the expropriated owner a just monetary value of his property at the date on which his interest is extinguished, the provisions of the Act arbitrarily fixing compensation based on the market value at a date many years before the notification under section 4(1) was issued, cannot be regarded as valid." Then the learned Judge proceeded to state: "To deny to the owner of the land compensation at rates which justly indemnify him for his loss by awarding him compensation at rates prevailing ten years before the date on which the notification under section 4(1) was issued amounts in the circumstances to a flagrant infringement of the fundamental right of the owner of the land under article 31(2) as it stood when the Act was enacted.