ISO: Woodstock battery pack

[jupiters_spot]

I'm trying to equip my collection of HP-21, 25, and 27 calculators with working batteries, but I'm short two of the plastic battery packs. I'm looking for part number 82019-B, which is the beige-colored battery pack holding two AA-cell NiCad batteries. I can replace old batteries, but it's hard to fabricate a replacement plastic part that matches. If you know where I can find one or two of these, please PM me.

Referring to a link on the museum site, this is what I'm looking for (with our without batteries -- I just want the plastic holder):



Thanks!