Roy Robbins of Acme had been advertising as early as 1932 .. very little is known about him and his company with few surviving pieces .
Roy was offering kits in 1/4" scale ... then in 1934 he worked with Lee B Green of MiLoco - Mini -Scale fame ...who worked in 17/64ths...... Roy left Green with in a year , but was now promoting 17/64ths
Roy went into or advertised going into HO in 1937 and that the Mike was going to Walthers ...last I heard of Roy Robbins .
The enclosed drive on the Mike is the same as found on the MiLoco Hudson and K4 ...also Mini Scale Hudson ..
I have what I believe to be a Acme P5 A 17 64ths ...
Hopefully in time more about Acme and surviving pieces will surface ... Roy offered a cast aluminum Hudson before MiLoco .... where are they ? ...
Roy offered a line of cast passenger and freight cars ...I believe I have one of the passenger cars which is very close to a Mi Loco ...but with cast rivets ..body in cast aluminum...
Cheers Carey