Looking to find out if these Error stamps have any value above the standard catalogue presented low value
Found another few error stamps (Scanned at 600dpi)
Christmas 1966 - Snowman - Used Stamps - Middle is standard, Left has a Blue Hat & not Pink - Right stamp has no gold on crown although I have heard it can be removed so please advise. Mainly interested in the 'Blue Hat' / Pink Shift though as an interest here though.
Thank you for your time