In case anyone has an archive of RCA's short-lived tape cartridges ...
Bell Sound machine for these cartridges, in its original box. It appears to be un-used or very
lightly used. It's probably in need to mechanical remediation of the effects of long-term storage in
a basement, but it may well work right out of the box.
Yours free plus UPS Ground. USA addresses only.
Ping off-list if interested.
-- Tom Fine