Which font is this? Is there an equivalnet for use in plain TeX?

[Herbert Voss]

Am 30.12.20 um 01:23 schrieb Heiko Oberdiek via texhax:
>
> On 2020-12-29 22:24, Reinhard Kotucha wrote:
>
>> Heiko, how do you distinguish between Arial and Helvetica?
>
> The small "t" is different. The top of the letter is sloped in Arial,
> but horizontal in Helvetica.

here is a comparison of ARial and Helvetica:
http://archiv.dante.de/~herbert/Fonts/Arial.pdf

I do not know the original author.

Herbert