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Cute!!

I like the minimalism.

Here is its even more minimalistic ancestor.

http://www.vintagecalculators.com/html/casio_mini.html

Decimal points were penciled in for some time in the future.

I have a number of Minis and Personal Minis, although I have yet to find the original CM-601.



My favorite Casio four-function from this era is the ROOT-8S. It's contemporaneous with the Mini CM-603 and has a similar keyboard module, but instead of a Japanese chip and VFD, it has a TI TMS-0126 chip and a HP-esque LED bubble display module that I haven't been able to identify yet. It's one of the only calculators with a LED display that Casio ever made.

Oh.. I have one of those "Red Dot" 603 too. But mine has a Remmington Sticker above the Casio one.