John Holladay wrote:

"Funny how,  it happens that you get a number 3 and a number 5 and all 
of a sudden,  there is the "need" to have the number 4 (or whatever 
size) to complete the set."

Hi Doc

Indeed that reasoning is a slippery slope towards what might actually 
become an obsession or "collection" even though we try never, ever  to 
pronounce that term around SWMBO ;-)

My old plane accumulation started with an okay Stanley 4 and then a 
very nice 6 -- and eventually I filled in from 3 through 8, mostly the 
C variants.

Only the rarity and price prevented my then acquiring a 1 and 2, and I 
sorta have that under control now...

By under control, I mean not actively seeking out the rest, but 
willing to get one if it comes up locally and at a sane and 
irresistible price.

Or am I just kidding myself?  ...We'll see  ;-)

Steve in Thunder Bay, Ontario