Another Record No.1, but once again with couple of small differences from those already posted. Like @Christer Carlsson's example (here) this one has plain cut leg ends, unlike the later production which gained 'feet' (here). The legs on this example, however, are have a slightly simplified profile to Christer's, which I would interpret as an economising move, placing the date of this one in-between those linked to above. The pump rod assembly is the post-1908 type. The last photo above shows very significant wear from use on the pump tube cap. This might have been a warning for what was to come inside the NRV access cap at the other end of the tube. Inside that access cap were only very sad remains of the original NRV. This NRV arrangement may have been the ultimate Trassman/Optimus solution to the difficulties they faced following the internal-NRV patent dispute with Primus, and it was certainly better than Trassman's initial response. But there was still an Achilles heel here too: access to the sealing pip for replacement still meant removing the outer sleeve by using an screw driver in the structurally weak sleeve outer end. Clearly this stove had ceased to be used after a spectacular failure of an attempt to remove the NRV outer sleeve … All that remained were the shattered remnants of the base of the sleeve left firmly stuck at the bottom of the access chamber!!! After several days of soaking in PlusGas and many subsequent hours of fruitless attempts to gain any traction on the remnants, final resort was to put a 0.8mm drill through what was left of the sleeve base to be able to prise it free from the threads, and eventually out altogether. The hole in the seat left by having had to use the drill is clearly visible bottom dead centre: Now what to do? Luckily the 'might come in handy one day' junk pile produced 2 old NRV sleeves of the right type. Could either one of these be made serviceable again? Nothing ventured, nothing gained! So a brass nut was modified to hopefully provide an end cap for the worst of the 2: Then a trusty Sievert No.12 blowlamp and the rarely used EasyFlo flux acquired a few years ago from @redspeedster were pressed into use. The result doesn't look pretty but may be serviceable. Only time will tell.