Found an ad from 1984 - poor resolution but gives you an idea of what the strap looked
Date: Sun, 25 Sep 2022 16:25:59 +0100
From: Tony Duell <ard.p850ug1(a)gmail.com>
Subject: [cctalk] Fwd: Philips P2000C carrying strap
To: "General Discussion: On-Topic and Off-Topic Posts"
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Does anyone have a Philips P2000C CP/M luggable with the carrying strap?
I will be restoring such a machine in the near-ish future and mine is lacking the strap.
Clear photos of the end fittings that slot into the machine, the dimensions of them, etc
would be a great help in making something up.