From around 1973, this is the English Mk3 version of the 51 aerometric series in burgundy with a steel cap. This is fitted with a medium. Excellent condition all round.
The Mk3 ilooks similar to the Mk2 and features the same 61 style cap and squared off end to its barrel. Unlike the Mk2, the Mk3 has a metal clip screw (like the later 61s) and coarser threading on both the nib shell and the barrel - 1960
Condition A2/1m - (Ref12177)
We have fully serviced this pen which includes disassembling the pen, ultrasonically cleaning all the parts and fitting a new pliglass ink sac. We then reassemble the pen, check ink flow and the smoothness of the nib. We also check and adjust the tightness and positioning of the clip. This pen comes with our normal 12 month service warranty