Oops!

[Audrey]

Looks like these were accidentally marked "HB33401", with a 5 later written over the second 3.

:P

[Richard Scales]

On first glance I would see that as an SP-354 though there are variants without the keep-alive pin (which this one does seem to have). I wonder how it differs from a regular SP-354.

I love these panaplex displays and have used several different types for various clock projects. The SP-354  does not lend itself quite so well to the task with just a leading '1' - there is an SP-151 variant which has the same digits, loses the + and - but gains 'A M P M' and colon parts - I have used those in a couple of designs.

Interesting number variation though.

- Richard

[Audrey]

Indeed, I really rather like the SP-151, it's great that someone is selling them cheaply on ebay ATM. This same board also has 2x "HB-356" (4-digit panaplex).

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[Richard Scales]

356 - like a couple of 352 side by side and totally pin compatible - I collect those too!

- Richard