Thanks Stuart for posting this link.
Previosly in this thread, I suggested that shibriyas with the characteristic recurve blade developed out of similar daggers with dog-leg blade around WWI. The shibriya in Stuart's link is from around that time (the seals connected are 1902 and 1914) and has an intermediate blade shape. Therefore, it could be seen as a kind of missing link between dog-leg and re-curve blades. I know reality is more complex than that, but still..
