What a treat
thanks Dave
Guess my serial # 1089338
is a serial number at being about 13,000 units earlier than this one sold in 58
So its likely mine is a later C4 unit.
Did you notice it's Interstate Precision Products
Not Interstate Engineering
Seems they changed the name most likely why they made a new manual halfway into production.
Be interesting to see who made the earlier C4's & how long they were marking them Precision Products....
A copyright of 56 does mean the unit was produced 56 to 58.
It doesn't mean it's a 56 vac unless it is known that the manual was updated in later years.
Still it is mid to late C4
Wow....now we have linked 2 serial numbers & it seems 56 was about the millionth mark for compact
Cool!
Just a note my boxed accessories were shipped from Canada in 1962 Patent Pending so its likely it came out during the C6 era
but I'll add the Sudser Instructions here since they are with my C4
