Luck is not chance — Luck-Penny

Luck is not chance－1
It's Toil－
Fortune's expensive smile
Is earned－
The Father of the Mine 5
Is that old-fashioned Coin
We spurned－
(F.1360/J.1350)
[1–7]:: luck-penny is a small sum of money given back for luck, or returned by the seller to the buyer.
[1, 6] Luck, Coin:: a hint on luck-penny.
[1] Luck is not chance:: to get a luck-penny is by a bargain, not chance.
[2] Toil:: the penny is the result of hard work.
[3, 4] Fortune, earned:: money received after a deal.
[5] Father of the Mine:: the source of wealth.
[6] old-fashioned:: luck-penny is an old tradition.
[7] spurned:: spurned on the tradition (penny) of showing the buyer's gratitude.

LUCK-PENNY, s. A small sum given back by the person who receives money in consequence of a bargain, S. lucky-penny, S.B. "A drover had sold some sheep in the Grass-market last Wednesday morning.－In the afternoon the drover received his payment from the butcher's wife, and not only went away content, but returned a shilling as lucky-penny." Edin. Even. Courant, 28 Oct. 1805. ─ An Etymological Dictionary of the Scottish Language (1808)