"Marco" was a branding employed by the well-known C & E Marshall Company of Chicago, a dealer in watch-making equipment, who also sold ones marked as Moseley, Marshall, Peerless and "Little Giant".
Some confusion surrounds the origins of the WW-Type Marco, a branding also found on some other C.&E.Marshall items such as tins of rouge. Was the lathe made in America or Germany? The balance of probability is that it was made in the USA, a clue being in the bed and the form of the central locating T-slot. Most standard types of WW lathes have their headstock, slide rest and tailstock pulled down by a central, straight-sided T-slot with location by a bevel on each outside edge of the bed. The C.E.Marshall and Peerless both differed from this arrangement, the clamping and location both being the duty of the T-slot; the location was by the T-slot having sloping rather than vertical sides (a similar arrangement was used on some Rivett watchmakers' lathes). The Marco lathe, like some of those from American Watch Tool Company and many German G.Boley lathes, had an ordinary WW-Type bed - bevelled on its outside edges and an ordinary central T-slot - but, for some unknown reason, with the approach to the slot machined away in a slope on each side. The form of the headstock and the straight-knurled wheel that tightens the hand T-rest are also very similar on both the Marco and Watch Tool. Hence, was the Marco really by the American Watch Tool Co. or their successors Derbyshire - or is it a G.Boley? Reader's comments most welcome….