Joe, like several others here, my cameras often come in pairs, though like Frank's they may not be identical twins.
2 Voigtlander Bessas, one an L and the other a T
2 Contax G2
Not a particularly close pairing of Minolta CLE and Leica M2
2 Kiev 4a, one faked up to appear a Contax
2 Fuji 645, one a GS645S and the other a GA645Wi
2 Bronica RF645
2 Olympus Pen FT plus the odd Pen FV
2 Pre-Spotmatic Pentaxes, one a K and the other an H3
Two Spotmatic variants, one a motor drive and the other an ES
Messed this up by getting an ESII recently. Got its cousin, though, a Pentax K2DMD
Messed up again with a single Pentax MX
2 Pentax ME Supers
2 Pentax LX
2 Pentax Auto 110
2 Pentax 6x7, though the first one is non-mirror lockup, the other newer
Not at all sure why they mostly go 2 by 2, and I seldom will have both of a pair loaded for active use.
2 Voigtlander Bessas, one an L and the other a T
2 Contax G2
Not a particularly close pairing of Minolta CLE and Leica M2
2 Kiev 4a, one faked up to appear a Contax
2 Fuji 645, one a GS645S and the other a GA645Wi
2 Bronica RF645
2 Olympus Pen FT plus the odd Pen FV
2 Pre-Spotmatic Pentaxes, one a K and the other an H3
Two Spotmatic variants, one a motor drive and the other an ES
Messed this up by getting an ESII recently. Got its cousin, though, a Pentax K2DMD
Messed up again with a single Pentax MX
2 Pentax ME Supers
2 Pentax LX
2 Pentax Auto 110
2 Pentax 6x7, though the first one is non-mirror lockup, the other newer
Not at all sure why they mostly go 2 by 2, and I seldom will have both of a pair loaded for active use.