[dangerbird]

F-31 series-- made between 1958-1962.
Highly prized in some circles--and you will pay alot more too!! These are the "fat base" version. Yes,, they test STRONG. Please pm if innarested.
Oh-- one has the hole in the center pin--the other does not,, rest assured that these are the real thing--f-31 B9J & f-31 B1B
Thanks for looking.

[dangerbird]

One left.

[zarco]

Hello. interested in your gz 34...do both sides of the tube measure equally? not sure if that can be measured curious  Rick

[dangerbird]

I'll let the one with the center pin hole go for 75.00 shipped