Watling Bird serial number locations

[WatlingBird]

I have a watling bird that has the serial number on the inside by the cash box and on the sticker inside. I can't find a serial number on the right outside top. Has anyone seen machines like this?

It's all original, from a reputable seller, just nothing stamped on the outside...

[watlingboy]

Completely correct. Usually Birds with the removeable horn of plenty, some were made with non removeable or fixed horns, have no serial numbers on any castings, only on the cabinet. This can usually be found in the two places you mentioned and also on the right hand edge of the front cabinet, near the bottom of the front casting as you face the machine. You will also never find any serial numbers on any Rol-A-Top mechs.

Watlingboy