Choose this queen if you want (3) medium frames.
 
A Potomac River Queen is high royalty -- never caged, banked or shipped.  That means, when you take delivery, not only is she mated, she's still actively laying.
 
If you confine a mated queen to a shipping cage for even "a few hours, and certainly overnight, [it] affects a queen's egg laying, total body weight and pheromone production." (Connor, Increase Essentials, 2d ed. 2014, p.139) She is no longer a laying queen, and "[t]o the bees, a queen that is not laying eggs is no substitute for an actively laying queen." (Id.) An interrupted queen can be accepted by a new colony and resume egg laying, of course, but it takes proper care and recovery time -- and maybe you're ready for an alternative. 
 
A Potomac River Queen comes with “the [medium] frame of brood she is on, bees and all, together with another [two] frame[s] from the same hive,” inspired by the simple queen introduction method most favored by G.M. Doolittle, the father of modern commercial queen rearing. (Scientific Queen-Rearing, 3d ed. 1901, p.76).
 
She essentially comes as a three-frame nucleus colony, in a Wellington County (Ontario) corrugated plastic nuc box, with frame guides to protect her.
 
DELIVERY DATES ARE WEATHER DEPENDENT.