not a rose comb. it would be flat on top. doesn't look like a pea comb either (3 rows). Looks like a swollen single comb.
It looks like a single comb from the pics. Hamburgs, for example, have rose combs. Does yours look like this? http://www.feathersite.com/Poultry/CGD/Hamb/BRKHamburg.html From what I can see it looks like a RIR, and my RIR all had yellow legs.
Looks like one of my girls that I got out of the Production Red bin at TSC. The salesman told me she was most likely a RIR.
I have heard a lot of conflict about the RIR yellow leg thing. Some say they have to have yellow legs, and some say not. I have some from two different sources - one set has yellow legs and one set has kind of pearl looking legs, and there is someone else who claims to have an old old line of SQ heritage (mine are not SQ by any means) that have the pearl legs. I'm confused but I guess it could go either way with the legs. At least on some that aren't SQ.