terminology – Where was the term “coinbase” first coined, who first used it? – Beragampengetahuan

The white paper doesn’t mention the term “coinbase” (in reference to the reward transaction).

I see the first version of the software main.cpp does:

    // First transaction must be coinbase, the rest must not be
    if (vtx.empty() || !vtx[0].IsCoinBase())
        return error("CheckBlock() : first tx is not coinbase");
    for (int i = 1; i < vtx.size(); i++)
        if (vtx[i].IsCoinBase())
            return error("CheckBlock() : more than one coinbase");
...

Did the term orginate in the Satoshi’s code?
Who first used the term on a forum, mailing list or other public venue?

I’m looking to trace back to the “original specification” of the coinbase transaction, if there is one.