I had a pretty good idea, but thought it worth checking...
15.0 kg 1980 Claud Butler Majestic (fixed gear transmission) as I ride it normally, i.e. with lights (hub dynamo + reserves), Camper saddlebag (on pannier rack), waterproofs, toolkit, first aid kit & a long cable lock.
20.6 kg 2000 Dawes Galaxy (aka the invalid carriage), with front & rear pannier racks & Carradice rear panniers, lights & everyday essentials (as CB).
No surprises there. The Carradice panniers are quite heavy, as is a 3x9 derailleur transmission. I don't normally take either on tour.
Sadly, as I get older & my power output reduces, I discover that weight has become more important. It's basic physics. Climbing speed (ignoring air drag) increases (reminiscing
) in direct proportion to power. Speed on the flat (ignoring rolling resistance) increases with the cube root of power. The lower my power output, the bigger the effect of climbing hills. And it's going uphill where weight has the biggest effect.
My body weight (72kg in the moring) has been declining slowly with age, due to muscle &/or bone loss, though I usually try to put on an extra couple of kg of fat as insulation during the winter. 1 kg off the bike is about 1% of all-up weight, and I'm happy to save a few grammes every year from the bike that does the most miles, as long as it doesn't cost more.