My M150 arrived today, what a beauty! Listed as used but looks absolutely pristine.
Not being real familiar with good Pelikans, I was curious: except for the color, this seems identical to my M250 - (post-1997?) single band on cap, band on barrel at piston cap, 'crown' style end cap, exact same size, same nib. Both say "Pelikan Germany" on the cap ring. The only difference I can see is that the print on the rings is ever so slightly smaller on the 150.
Is the 150 basically a 250 that was only offered in black to serve as the entry-level pen in the line-up?