Hi Phil:
None of the tags you posted photos of show any Alaskan camper serial number. The topmost plaque in your first photo suggests a prior owner of your camper was a member of the Portable Camp Coach Association, likely a long defunct camper club that had no association with the R.D. Hall Mfg. Co. that built your Alaskan camper.
The lower tag in your top photo merely certifies that your Alaskan camper complied with all California laws and regulations applicable it to when built. No Alaskan serial number is shown on the Calif. compliance tag.
Your second photo shows a plate that gives notice certain features of your Alaskan camper were protected by U.S. Patent Number 2,879,103. No Alaskan serial number appears on that U.S. Patent plate.
Does the large emblem above your rear door read "Alaskan" or "Alcan"?
Open your lower door and look closely for any numbers stamped in the alumium threshold. If you find any numbers there they might be your Alaskan serial number. If no numbers appear there, look on the vertical surface of the angle iron across the bottom rear of your Alaskan for stamped numbers there. If present, they might be your Alaskan serial number.
I don't believe anyone to date has found annual production figures for Alaskan campers. In the Sixties and Seventies, Alaskan campers were built in 5 or 6 different plants around the U.S.A. that likely used different blocks of serial numbers. Surviving Alaskan campers are too few in number to gather and analyze a small batch of serial numbers to estimate annual production.
See if you can find your Alaskan serial number stamped into your camper somewhere. Good luck!
