[Boatanchors] OT warning National Clock module data wanted

[Dave Brown]

No luck in the usual places- this esteemed group might be able to assist! 
It's sort of a boatanchor......
Remember the National Semiconductor digital clock modules?
 Well,  I came across what might be one  recently in a box of junk at the
local club. It is an MA1022 and I can find nothing about it on the
internet-nor do my old National data books include it. Note that type
number, its NOT the more common MA1002, MA1003, etc and this one has a
different display to usual.
Picture here-
http://homepages.ihug.co.nz/~tractorb/MA1022.jpg

Maybe it's not a clock module at all,  but a digital display module for some
other device like a DVM?
Regardless, if someone has data on this module I would appreciate a copy.
 73
 Dave, ZL3FJ