looking for flip clock numbers

[Shale]

Im looking for a set up numbers like an old school flip clock. I need it to be a count down timer so they have to be able to run backwards, so that is the first issue. Im not sure what they are called. Here are some pics that are similar so i am clear what I am talking about. What are they called and where would i purchase the numbers or a complete unity. i need a count down timer about 30 min or so. and the numbers need to be 6 inches to a foot tall. thanks

[Polossatik]

no idea bout flip clock numbers, but flip dots:

from

http://hackaday.com/2012/07/19/flip-dot-display-is-an-advertising-experience-we-can-get-behind/#comments

http://www.flipdots.com/flip-dot-boards-xy5-14x28.html

 A board 14×28/0.53" is listed at 450 EUR. This
        includes display board and driver electronics with RS485 interface. You need
        24V power supply.
        There are different options for controllers that are resulting in different
        driving speed.

        We can also supply individual strips at 4 EUR/each (7 dots).

        These are list prices, excl. shipping or taxes.

        Each project is however different and I would prefer to speak directly with
        interested people/companies to offer them the most suitable solutions.

        Marcin KRYSI?SKI

        Alfa-Zeta Sp. z o.o.
        ul. Starorudzka 6a
        93-418 ?ód?, POLAND
        tel. +48 42 6891200
        fax +48 42 6891202
        http://www.alfazeta.pl
        info@alfazeta.pl


I'm not related to the company, just giving info