TOC Expander Seat Post Identification

[oddball]

Need help to Idenify this TOC seat post

 

[Billythekid]

Can u measure the part that goes into the bike

 

[oddball]

 

[fat tire trader]

Is this the same?

 

[oddball]

Sure looks like it, original with the bicycle? What is the bicycle?

 

[fat tire trader]

I don't know, you can see it here http://www.fattiretrading.com/1906mystery.html

 

[Archie Sturmer]

If the post is 13/16” with the 1/32” (all around) shim, then the post likely measures 3/4”.
Other manufacturers besides Colson, in the 1930’s and later, and Great Western, in the 1920’s, may have used 3/4” posts.
GWM bicycles that I have seen used GWM posts and the shim, for some reason.

 

[oddball]

I would say the shim is more like a beauty ring, the seat post tube ID would be 13/16".

 

[Billythekid]

I have a Spalding and need a seat post like this