Lets see, I have the following PAIRS of blades.

1. large and small Grips (modified sheepsfoot blades)
2. large and small CRKT Crawford Kasper folding fighters (plus the fixed blade)!
3. large and small CRKT crawford designed folding falcon
4. large and small Benchmade Pika

Guess that's about it for pairs. Oh yeah I did at one time back before they were stolen in 1986 when I moved from Omaha to Tokyo a Large (11 inch) regular (5 3/4 inch) and mini (4 inch) Tanto from CS.

I still have the Mini, some scumbag packer took 8 out of 11 knives I shipped in my hold baggage.