You're confusing having different stations working on these orders with having different machines. You can determine HOW it was stamped, though, whether by machine or by hand, and they may use the hand stamp for front desk orders because of the low volume of requests, as compared to mail-order and Internet requests. However, if the electronic machine is busy, they can go over to another station and use their hand stamp.
But you can't look at the stamps and say, "This one was done by mail-order and this one was done by Internet order."
Yea actually you can. The only Machine Stamper they have that does the date ABOVE Onaka’s stamp is in the By Mail order room. I was told they only had one stamp like that, and thats where it is.