Check protectors / writers are one of the most interesting & diverse office machines you can find to collect. The earliest models were called check protectors and they punched or cut holes in the check creating "chad" to keep unscrupulous parties from altering the amount later and cashing say a 100 check for 1000.00 by adding a 0. These earlier chad making models have a special feeling given the outcome of the Gore/ Bush fiasco and how "Chad" figured into that. Later models switched over to ink as the medium and are referred to as inkers. These later models are much more common and can still be readily found. The earlier punchers are becoming increasingly difficult to find and some are quite rare.
Wesley
Check Protector This one is a bit
different from the larger models. You sin the top to the right number and
push the plunger down. All of the patent info and name are on the bottom.
It is in nice condition and works as it should.
BS-CP-7
Good +. . . . . . $125.00
Arnold
Check Protector This is from the
30's or so. The idea here was to so destroy the integrity of the paper that
the amount was written on that any attempt to alter it would render it unreadable
and unacceptable.
BS-CP-4
Good +.......... $25.00 SOLD!
Protectograph
Check Protector Writer This is the model
that more than any other made the earlier punch model check protectors obsolete.
It was manufactured by the G. W. Todd co. who went on to make this and several other
ink versions of check writers. This is one of the first and the most
popular of the new generation of "inkers". The condition is super and they
are not near as easy to find as they use to be. A great example.
BS-CP-3
Good +.......... $45.00
"Safe
Guard" Check Protector Writer This is
an example of a second generation inker check protector. It operates much
the same as the punchers above, but instead of punching or cutting it creates a
backup record of the amount on the check in ink.
BS-CP-2
Good +.......... $35.00
"Safe
Guard" Check Protector Writer This is
the same as the one above, but a different model. Super condition.
BS-CP-5
Good +.......... $35.00
Good +.......... $ 25.00 /
choice BS-CP-8
BS-CP-9 We can help you
sell your quality Antiques in this and other categories of Antiques.
If you have similar antiques or collectibles you want to sell please see our 
2
Check Protector / Writers I can not read
the name or patent info these small ink models of check writers.
FAQ Page, the
Appraisal / Selling Page, and the
Selling
Your Collection Pages for further info about
selling with us.