Rare folding knives for your enjoyment

[fernando]

Spanish half vara or 17 3/4" is about 45 cms.. Assuming this is the length with the blade unfolded, it is a big knife but, incomparably not so large as those huge things made for show off. The one posted in the last picture of #1 measures 113 cms. and we know there were larger specimens.
The example held by the First Spaniard may be a bit exuberated by the author.