By posting this question you want to ascertain that whether the properties will fall under ancestral properties category?
Though the properties were purchased by great grandfather and then by his sons, as per you there were proper partitions among their siblings during that time itself, subsequently also the properties were duly partitioned between your father and his siblings, therefore the properties never acquired the status of ancestral anytime till this date.
As the properties were partitioned and the share holders were possessing their respective shares in the properties, it becomes individual's own and absolute properties.
Therefore whatever property is in your father's possession now shall e his own property and you may not eb eligible for a claiming a share in it legally.
However, you may issue a legal notice to your father and his brothers seeking a share in the properties sold by them in the past without your knowledge and consent and ask them to give your share out of the sale consideration amount they received from it, let them give a reply based on which you may find some grounds to file a suit as per your proposal.
Consult a seasoned lawyer who may be having more different ideas to procure the desired reliefs.