I found a -54 OEM Richardson battery in an alley a few blocks from home, about four years or so ago.
Geoff Erdos has copied it, and produced exact cases to house modern batteries.
Sorry I haven't a link or email,
PS: Now I have no need to cut up the real thing. Someday, somebody may specialize in re-lead-ing them, and that would truly be a restored historical artifact to be proud of. Not that it is not a dumpster trophy as it is..
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