Not much to go on, but I suspect the 2nd set of numbers may be a catalogue number perhaps. Id suspect as just a guess that it MAY be a Huffy, AMF or Columbia build. Get picts if you can.
So I have a late 50's to perhaps late 60's mystery bicycle that may possibly be a Ranger or Rangerette (since it is a step thru frame). I never heard of this brand and don't know if it is it's own manufacturer or made by someone else.
My regular camera isn't working and was only able to post...
I gotta agree, that tandem is most likely late 60's to mid 70's and the answer is actually on the headbadge here. Yours is stamped 0539, which indicates it was built on the 53rd day of a year ending in 9, most likely a 69' or a 79' ... assuming that is the original headbadge fo the bike.
Cool Trek cruiser. I see one too many wires/cables running on this thing for it to be a single speed though. All the black on it looks cool though and bet it rides nice too. This bike is probably in their catalogue within the last 10 years, as I do not know what actual model it is.
I am going to guess that triple crown suspension forks have finally trickled their way down into department store bikes. Although I have not see this at my local X-Mart, there are probably bikes equip with these on their rack, if not at least in their catalog. Quality and performance likely to...
My first thoughts on the first bike is a 70's Columbia as well, but I see Monark as being plausible if I am wrong. Never heard of the Mowhawk name before but both cool bikes.
Your Tyhoon will be lucky to fetch $175 and the Penny's Formost probably coming in at $100 to $150 on a good day. Depends on the area in which your selling them although they are both in descent shape. In an area starved classic bikes, I'd maybe say an extra $50 each is possible.
Rather sure it is a Royce Union, an English built bike. Raleigh, Royce Union and Phillips are the main English makes I am familure with. Raleigh probably took them all over though. Cool English racer