I didn't think such a thing was possible, until I met the guy I bought my 1903A3 from.
Me and a buddy went to the range so he could try out my K98. Ended up talking to the guy at the next bench, who was in the process of selling one, a pretty nice Russian Capture for a very fair price. My buddy jokingly asked him, "Got any more?" not expecting the answer to be: "Yeah, got 3 more in the car"
We ended up finding an ATM machine, and my buddy took home a nice RC K98.
While he was getting my buddies info for his bound book, I asked if he had any 1903s he was wanting to get rid of.
He paused, for a long time. Finally said, and I quote: "I'm not sure, I'll have to check my master list". He gave me his business card, and about a week later we met at his work to look at buying a rifle. He brought five for me to look at, three 1903s and two 1903A3s.
Now I don't know if he had "too many guns" but when you can't remember if you have a particular rifle, and then have at least 5 of them, I suspect he is getting close.