Riser Coin Punches
Copyright 2017 by James P. Riser
Folks have asked about these, so here is a little
I have played around with card punch ideas for at
least 3 decades. The penny type shown here was designed and first
made about 18 years ago when I picked up the special tool for
Since then, the penny version was the only model that
I made. The quarter model (shown above and at the bottom) is a
later refinement of the idea but is not cost effective to market.
So...do not ask!
These coin punches are for marking playing cards which
can later be identified or located by feel or touch alone. I have
always liked a blister punch for marking the playing cards. The
idea behind these coin punches was to make a very portable blister
punch which could always be available when needed. I decided to
convert a coin into a blister type of card punch. This allows
air travel without creating drama.
Here is the tails side of one of my penny punches.
For these punches to work correctly, it is important
that there be distinct margins betweem the punch and the coin
A punched card
looks like this.
The dimple is easier to feel than see.
The quarter punch is an experimental model having
a stainless steel punch which has been microwelded into position.
The face side of this coin may be seen at the top
of this page.
In use, the coin with its domed projection is held
in position against the face side of the card. The thumb gently
applies pressure to the card from the bach side to slowly form
the blister. With practice, a very subtle blister will be easily
A variety of uses for punched cards has been described
in previous docs that I have made available over the years.