Swanni, did you check your Honda dealer? I got mine for a 1978 brand new just a few years ago from my local dealer. Surprisingly, they still have quite a few parts available from the dealer.
As for your question, sorry I can't help you with that.
Really? huh I will look into that,thanksIf it's still available from Honda, a speedo for a '77 would run ~$92 plus shipping from hondaparts-direct.com Tough to beat.
I seen one yesterday with 4000 miles on it and it wasn`t in too good of shape..it went for 60 bucks and 30 shipping..if I can get a new one for 92 bucks I would be a retard not to just go new.Theres at least 3 of the round CT70 speedometers at ebay. One of them was listed under CT70 Speedo, the others under CT70 speedometer.