This is the lamy 27/32, the predecessor to the iconic lamy 2000. It was produced between 1952 and 1966.
The parts and features are nearly identical to the lamy 2000. The cap features a spring-loaded clip, and is held in place by a clutch ring that sits between the barrel and section. It is a piston filler with an ink window. The underside of the hood/section has a similar shape, and the same "porthole" for filling as the 2000. Now for how it differs to the lamy 2000.
The barrel and section are made of resin, not makrolon. The ink window is far large and fully transparent. The clutch ring is gold-plated to match the cap. The cap features an alternating pattern of 1, 1, and 4 vertical pinstripes.There is a finial on the cap featuring the logo lamy used at the time. The 27/32 nib is semi-hooded, and the breather hole is visible. It is a firm extra fine.
You can see in the writing sample that i could squeeze a fine out of it on the downstroke, but barely. Consistent micro-scratches on body and cap, but they don't stand out to the naked eye. The cap polished up very nicely and is quite reflective. Some scratches on one side of the nib (refer to close-up), but you'd have to look closely, and nib performance is not affected. Diameter (barrel/section top-bottom): 11/10.5-8.3.Ink capacity (ml): 1.4ml.