Hi Ian :hi:,
No need to be jealous
: it cannot be your missing link as this lot is a combination of weights from both pond life series. If my information is correct, pond life n. 1 consists of: Otter, Great crested grebe, Frog and Trout (and I have both Great crested grebe and Otter - the two weights at the back in my first picture) and pond life n. 2 consists of: Dragonfly, Sedge warbler, Kingfisher and Perch (I have the first three - see the remaining weights in the picture). All the weights are n. 8/30 with the exception of the Sedge warbler one which is n. 2/30. I think somebody bought both sets but they got divided up.
Interestingly, a few weeks before this lot was offered at auction a single weight from the pond life series was offered on Ebay: the frog. I was travelling abroad and my access to the internet was quite random; so I did not manage to bid (I might not have got it anyway). However, the frog was n. 8/30. In all likelihood, it was part of the same set. Somebody, somewhere has just acquired 'my' frog
By the way, I saw the Strathearn doorknobs, they looked good. Well done!!