When is a plane till not a plane till

You know those fair and fête things where you guess the weight of the fruit cake or how many sweets are in the jar? This is like that, except you don't get to win the cake. Or in this case, the jar of planes.

"The jar of... What?" Do I hear you splutter?

Well it's like this... A few weeks ago I looked at this unexceptional Kilner jar knock-off, and thought "Self, I wonder how many planes you could fit in this jar?"

Well you know me and wondering - it's fatal. Instead of having the thought, discarding the thought, and then going and doing something useful, the thought stuck. The thought persisted. Dammit, the thought positively nagged. So you can guess what happened next.

Well I say "Next", but I mean a coupla weeks later, obviously. Doesn't do to rush.

I gave myself some parameters to avoid the temptation of asking El Presidente if I could borrow a gross (or two) of key rings and totally skew the results. Viz: The planes have to be of a functioning variety; they must be in one piece and not broken down into component parts; and they must come out of the experience unscathed. (The last one was particularly important.) I also wanted to avoid an exclusively Canadian jar, if at all possible. Just because.

So a single one litre glass preserving/food storage jar, approximately 6in tall. How many whole and functioning hand planes can I fit in it and still seal the lid?

And just to get you started, yes, I did use the Veritas miniatures, but as you can see, they didn't get me very far...

Answer next week. I know you'll be on tenterhooks.