A1s were, of course, upgraded to A3s (as you imply). That Flying Scotsman is the only survivor is very sadly true - something I much regret and think about every time I see yet another preserved GWR 4-6-0! They had such fantastic names and they made such an great sound at full chat heading north out of London. For some reason I didn't love the A4s nearly as much!
Being a GWR fan, I'm not complaining
But yes, it is sad that 60103 is the only surviving A3. I suppose there's always the new-build route, should anyone really want to build another!
I believe preservation of a Claude Hamilton was proposed, but the last survivor was scrapped at Stratford, a society has been formed to build a replica
I left this bit out of my original answer to the OP, again from Wikipedia:
en.wikipedia.org
A group based at the
Whitwell & Reepham railway plan to build a replica of D16/2 No. 8783 to be named
Phoenix.
Here's the Europe list as well for those who are more brainy.
Europe starts with the British locos in 1900 then introduces Europe ones after the A4 Class and ends at the year 2000
1. 6/6 GE Class Crocodile (1921 Swiss Electric Loco)
2. 1-Do-1 Class E18 (1935 Dutch Electric Loco)
3. 4-8-4 242 A1 (1946 French Steam Loco)
4. V200 B-B (1953 German Diesel-Electric Loco)
5. Bo-Bo-BO RE Calss 6/6 (1972 Swiss Loco)
6. TGV (1981 French High Speed Loco)
Wonder how many of these still are around?
@Rescars has already answered the first one, so here are my answers (from Wikipedia again) for the rest:
2. Six of the DRG Class E18s have been preserved.
3. Wikipedia doesn't have a separate article for the 242A1 but gives the following as part of the
4-8-4 wheel arrangement article:
In service, the 242A1 was allocated to the
Le Mans depot and, between 1950 and 1960, it hauled express trains over the 411 kilometres (255 miles) between Le Mans and
Brest. It did not remain in service long, however, and was withdrawn and scrapped in 1960.
4. Looks like these locos went to various places after DB service - Saudi Arabia had some until the last was scrapped in 2002; Italy has some; Greece has eleven; Spain had one as of 2018; France had four until 1999; Switzerland had seven before six remaining locos were sold into private ownership in Germany; Algeria has one which "has been stored for many years at Constantine depot"; Albania had five but Wikipedia doesn't say if they are still there; Germany has fourteen by the looks of it.
Source:
https://en.wikipedia.org/wiki/DB_Class_V_200
5. The RE 6/6 locos are still around (and are also called SBB-CFF-FFS Re 620 locos)
6. There isn't one TGV train - there have been several - and there are currently five in service (the Atlantique, Réseau, Duplex, POS, and 2N2), and there are two retired sets - the Sud-Est and La Poste.
Hope this is helpful
-Peter