Most common calculators in the forum?

[Massimo Gnerucci]

(12-11-2017 02:25 PM)rprosperi Wrote:  

(12-11-2017 09:14 AM)Massimo Gnerucci Wrote:  I once saw a photo of this one, on an eBay auction that I lost.
That "+" still remains the only intriguing thing in that series. ;)

I have seen one long ago in an auction which was a fake. It appeared the seller had marked the model name to add the "+", I suppose to try to sell it higher, the notes had no specifics. Likely not the same one.

Maybe HP was developing a "+" but never introduced it?

Oh well, a fake is always around the corner but that photo had a legitimate look. IIRC it was about 15 years ago.