Majority of the time, a comb like that indicates a cockerel. Some people have said they have had young pullets with combs like that, but it seems fairly rare. Look for red patches to come in on the wings and the comb to get pinker/redder in the next week or two, which would confirm a cockerel. Beautiful markings on that bird, and I agree the overall look is a pullet. However.... Will keep my fingers crossed for you if you are hoping for a pullet. Please update in a week or 2 or sooner if you see anything alarming!