Nikola Mirotic Chicago Bulls Signed 11x14 Photo. This is an 11x14 photo that Nikola signed at our private signing. We show a picture of Nikola from our signing, you will also receive this proof picture. This item comes with a SidsGraphs COA Hologram. Payment Shipping InstructionsShipping and handling is 10.00, Illinois residents must add 7%25 sales tax. Paypal is the only form of payment that is accepted. After purchasing, pay instantly with your credit card through PayPal!