The ARC is a clone of the RCA. According to the IML page, there were 2 models: 834 or 2500. All are for 45 rpm. Non available in '58 (and '59 ?), only from '60 to '61 or '62. A good idea would be to take a pic of the unit and send it to ?. Ther's no pic of the ARC on the IML record player page. -- Philippe COURANT (Pau, France) Imperial 57 Crown convertible Buick 58 Roadmaster sedan - American Car Club de France (ACCF) : http://www.accf.com - Chrysler Imperial France : http://www.ifrance.com/c-i-f - Cadillac " Standard of Excellence " : http://www.ifrance.com/accf-cad - SportsCars : http://www.ifrance.com/accf-sprtcar