It looks like an Ikea 365 saucepan lid, I have several. Yes, the handle did fall off one, luckily after I had drained the veg. Stuck it back on with stainless steel mig and argon. Ugly but worked.
I had to do a couple of handles for my mate....it was his moms favourite pan (stainless). I used stainless wire in the mig and it worked out all good...did the same at Christmas when my favourite colander broke!
Was a case of getting it done as the spuds were already on boiling...not pretty but saved it from the bin and good enough for me (it was pretty thin stainless...the Kemppi was on it's lowest setting...0.5mm).