1-line display calculator with flip-up hinge?

[DA74254]

Hello there all.

As seen before, there seems nothing is too difficult to dig up by all you fine people in here.

I came into a discussion with our Captain aboard. He once had a Casio FX-700P style calc. Outgrowing this, he told me he got a similar type, though more advanced calculator, which he still claims (or as he himself means to recall), a Casio, but with a top-hinged display. ála HP LX-200 or Nokia Communicator (phone) type. Though, he also strongly "remember" that it had a 1-line display in the flip-up section.

We've both tried to search for this (elusively phantom) calc, through various search phrases, but have come up blank.
Has it ever existed a calc as described?
Alas, Captain says it was a Casio, but it might have been another brand. Also, it might have been one made for navigation, as it came preprogrammed by his nautical school.

[Jeff_Birt]

Perhaps a Casio FX-708P or FX-790P also sold as Tandy PC-5/PC-6.

[Didier Lachieze]

Casio fx-88 ?

[AndiGer]

More than one ...
https://casio.ledudu.com/pockets.asp?type=74&lg=eng

[DA74254]

Thank you. That was quick.

Captain confirmed; Tandy PC-6.