The way it is
There seems to be a lot of confusion and misinformation around regarding what Lemons come with what. Maybe we should put together a definitive list of the basic types. Off the top of my head, this is it.
"Lemons"
M26: Crimped sheet steel body over a frag coil with notches facing opposite explosive. Used M204A1 and M204A2 detonating fuzes.
M26A1: Same as M26, but with frag coil notches facing explosive and tetryl boosters nested around det well. Used M204A2 detonating fuze.
M26A2: Same as M26A1, but with larger fuze well to accommodate M217 Impact Fuze or M215 detonating fuze.
M30: Cast iron practice Lemon. Used M205A1 and M205A2 igniting fuzes.
M50: Cast iron practice Lemon converted for live fire training by sealing base, filling with Comp B(Im not positive it was Comp B) and adding M204A1 or M204A2 detonating fuze.
M52: Same as M30 and M62, but with larger fuze well to accommodate practice M217 impact fuze.
M56: Same as M26A2 and M57, but without M217 impact fuze. Used the M215 detonating fuze with safety clip.
M57: Same as M26A2, but with the addition of a safety clip.
M61: Same as M26A1, but with addition of a safety clip.
M62: Same as M30, but with addition of a safety clip.
M66: Same as M52, but with addition of a safety clip.