Xavier,
Thnx for your reaction.
I have phoned with KNM-Utrecht and they say there was an article in "De Beeltenaar 2001" pages:275-277 by Chris van Draanen (mintmaster at KNM-Utrecht).
PDF-file : https://debeeldenaar.nl/onewebmedia/De_Beeldenaar_25_2001.pdf
I searched for that article and found it.
I have copied the text and put it on Google-Translate.
Hopefully it give some answes for you. Can you save this artikel somewhere within NUMISTA??
Maybe is an option for the "Other-marks" or “MINT-mark” or “TAG's”??
Reading this article: they have tried making the EURO-coins in this way!!
This is that translate result :
=============
The tilting coin (Chris van Draanen)
-----------------------------------------------
A coin is round, after all, money is necessary
roll. Where the payment transactions
mainly takes place from hand to hand
hand and vending machine use is limited
is, other forms may occur.
We know angular coins (7-, 9-,
11- and 13-angled for example),
coins with a hole, with a kind
floral pattern and other variations. It
makes the distinction between the one
and the other value more clearly. And
all coins are equipped with a
stacking edge to prevent damage
to limit the image and create piles
stabilize. Picking up coins
with a stacking edge of a smooth surface is difficult
and it is often the case with cash register payments
change shoved and then in hand
or collected in a wallet.
Persons with limited skills
in the hands (and nail biters).
coins are not due to the stacking edge
pick it up piece by piece.
Alphons saw this usage problem
van Leggelo when he worked with
disabled people and he came up with a
solution: a coin executed as
a piece of the flea game. In the
thickest in the middle and towards the edge
descending. He made some models and
with one hand it was possible to get there
pick up three at a time. Are
he called his invention 'the tipping coin'.
Van Leggelo submitted the idea
the Patent Office and in mid-1989
he came to me with the proposal
future coins as a tipping coin
to feed.
The conversation in the mint master's room
at the then Rijks Munt
in Utrecht was constructive, but
change in the coin series since
1948 with few exceptions
had remained unchanged, I did not see
as feasible. The issuance of tokens
then provides a great opportunity
to test in practice. Especially like this one
tokens are intended to be temporary
means of payment.
Shortly after the first visit
Mr Van Leggelo started there
conversations with board members of the
Rotterdam Foundation 1990. A novelty
present with the payment method of
Rotterdam would be of interest
can expand the audience. So it became
decided to put out the so-called Porter
as a tipping coin. In common parlance
of this metropolis became the
coin also called 'seesaw coin', something
that Mr Van Leggelo less so
appreciated. The implementation of the
penning was not yet optimal. There had to be
change something in the stamp structure
or in the shape of the roundels
combination with custom stamps.
There is during board meetings
played a lot. The first battle of the
Porter's tipping coin took place on
February 2, 1990 and received ample
media attention. The use
was surprising to many people
named.
The second tilting coin was made
for the Dutch Invalid Sports Association
(NIS) in 1991. Because this one
token had no payment function, was possible
no experience is gained in it
usage. However, new stamp shapes were introduced
tested during production. It
Couldn't get custom roundels yet
to get, partly because of the numbers
are too small for these types of actions
major research efforts from suppliers
to desire. The proceeds from
this second tilting coin was intended
for the Paralympics. Unfortunately the
action not very successful.
It became the third tipping coin
Stupid, that in five different ones
performances started circulating in Utrecht
in the context of Utrecht Jubilee City
1992. A unique collaboration between
five settings, all of which are slightly too
had four. Also the National Mint
was part of the 90th anniversary
as a state-owned company. This token was just
as the Porter a success.
Both from Rotterdam and Utrecht
there were positive reactions to it
use of the tilting coins. By means of
after all, the beveled edges were possible
the coins become without sliding
picked up from smooth surfaces. The
production technology was now strong
improved and the Dutch Mint
also had some advertising tokens
designed as a tilting pin. The route
was free to enter the Ministry of
Approach finances. Unfortunately, but
understandably, none existed
interested in something else in the coin series
to change. The new European
after all, the currency (then ECU - now Euro) was
approaching.
The euro
-------
Obviously the next step was
towards the Consultation of European
mint masters that started in 1992.
All mint masters at the time received
examples of Porter and Dommetje
awarded and during the meeting
played with. However, the discussions were
ever so difficult and so political
nationalistically charged, that the new
idea received little attention. Once more
the tilting coin has been on the table,
partly because there are now many mint masters
had been replaced. It worked there too
it is not about the tilting version
coins to discuss. Er
were enough problems dealing with the
various ministries of finance
discuss. The tactile characteristics
for the blind and the safety features
for the vending machine industry
a greater priority. In addition, there were
the specifications the topic of conversation.
An additional difficulty, a novelty, was not welcome.
It can happen that an op
a good idea is not implemented.
That is the fate of many an invention. Novelties
in coins are difficult to transit. Tokens
then offer an alternative too
commemorative coins with a limited
circulation offer the opportunity to do something
promote news. The Millennium Series
from the Royal Mint in England,
which is also by the Royal Dutch
Coin is sold, show
that many new techniques and
versions are possible.
====================
With regards.
Bert.
Netherlands.
