Coast King

[bulldog1935]

here's a thread with 3 Huffy Sportsman bikes posted. http://thecabe.com/forum/threads/vintage-huffy-sportsman.6034/
Two are dated. Both of those have cottered cranks.
The third, unfortunately, is not dated, but it has an Ashtabula crank, as yours does.
I'm thinking if you want to find more about your bike, you should follow up on Huffy Sportsman searches.

Very likely Raleigh-built frame, but also likely the latter versions of these were built in Canada or USA.
I already visited Kurt Kaminer's page but couldn't fit your serial number into a Raleigh date range - maybe you'll have better luck:
http://www.kurtkaminer.com/TH_raleigh_serials.html
maybe not built in Nottingham and has a Huffy s/n scheme instead of Raleigh.

 

[Brutuskend]

Check the rear hub for a date code. Looks 70's to me

As Gt say's check your hub. If it's a S/A it will have a date stamped into it. Two sets of digits, first set is month, second is year.

 

[Brutuskend]

After looking closer at your pic. the bike has Shimano parts, not S/A, so no date code. Looks to be fairly newish however.

 

[juvela]

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Yes, the trigger mechanism certainly appears Shimano in the photo.

The combination of a Shimano planetary with a one-piece chainset is suggestive of a Japanese origin.

Note that frame is lugged and has a bulge-formed head. This latter likely a product of Nikko-Sankyo.

No guesses as to a specific manufacturer for the cycle.

To receive additional information from readers they would need to see more and better visuals...

For dating, this page explains Shimano date codes -

http://www.vintage-trek.com/component_dates.htm#shimano

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