Deagan Glock Bars and Resonators Among the first instruments J.C. Deagan produced were flat top glocks with squared edge bars. Deagan later manufactured a roundtop bar with a rounded edge and "Parsifal" glocks were marketed as superior models within the Deagan catalog. As Deagan perfected his instruments, a variety of resonators were being developed for glock racks and cases. Here are a few examples. Model Number Type Octaves & Range Bar Size Date Built Notes - Flat Top 3 C-C 1x1/2 Pre-1910 Early model case resonators with fins and Halcomb steel bars - same model without resonators - Flat Top 2.5 G-C 1x1/2 Pre-1910 Early model case resonators without fins (case rebuilt) - Round Top 2.5 G-C 1 1/4x7/16 Pre-1910 Early model case resonators - Round Top 1 1/4x7/16 Pre-1910 Early model rack resonators with fins 561 Round Top 3 C-C 1 1/4x7/16 1910-32 Parsifal rack resonators without fins 60 Round Top 2.5 G-C 1 1/4x7/16 1918-30 Parsifal case resonators - narrow openings for lower notes graduating to wider openings for higher notes *Credit and thanks to Scott Higgins for assistance with photos and information on this page.