Three away from having one from each series, first through third gen

I'm only three guns away from having one from each series of first through third pistols.

Currently, I have a pistol from:

• 1st Gen: 39, 59
• 2nd Gen: 459 (have a 469 and 669, need the 645 series and 439 series)
• 3rd Gen: 3900, 4500, 5900, 6900, 4000 (need 1000 series)

I think the next add might be a CS9, CS40 and CS45 as I can find them.

Anyone else have a complete-series collection?