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We examine two scenarios for formation of the planetary nebula K648: a promptscenario where the planetary nebula is ejected and formed immediately after ahelium shell flash and a delayed scenario where a third dredge up occurs andthe envelope is ejected during the following interpulse phase. We presentmodels of both scenarios and find that each can produce K648-like systems. Wesuggest that the prompt scenario is more favorable but cannot rule out thedelayed scenario.Comment: 19 pages, 2 figures, latex, 2 files containing postscript figures.  Paper to appear in Astrophysical Journal, 483, 837 (1997

On the Origin of Planetary Nebula K648 in Globular Cluster M15