Hi,
CCNP Training Kit eBook says:
"Original Ethernet frames cannot exceed 1518 bytes. If a frame of the maximum size is tagged with 802.1Q, the resulting frame will be 1522 bytes. This frame is called a baby giant frame. The switch processes this frame successfully, although the switch might record it as an Ethernet error."
So I think you might see baby-giant frames if there are no other error notifications.
Regards,
Milan