Looks to be an AM-9 series. A rare bird. We don't see many of these today. Notice the Plastisol coated wire racks, Very vintage.
WK78
Ebay link
https://www.ebay.com/itm/194807290114?hash=item2d5b6b5902:g:pf0AAOSwpxFiAsI~
WK78
Ebay link
https://www.ebay.com/itm/194807290114?hash=item2d5b6b5902:g:pf0AAOSwpxFiAsI~
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