My suggestion is to have the auction finish for 8ish Sunday night. By that point in time everyone is home but still awake. I am a huge fan of posting for $0.01 and since it’s probably going to go first class mail, include postage in the price of the auction.
It’s only $0.41. Depending on how well known this place is, I would say, expect 50 – 75. So if you want a reserve then put $50.