Got my grail pen recently — a Montblanc 146 green-striated! (produced 1949-1960).
Cosmetically the pen isn’t excellent. The green has faded a bit and the celluloid has ambered much.
But it was priced appropriately and, having passed through Tom Westerich’s hands before reaching me, works and writes properly. All the parts are accurate for the pen, and it’s a pleasure to write with