Help valuing some modern foreign key date coins?

Any idea what these two coins go for these days? I can't seem to find very reliable sold listings to go off of and I don't actively collect either of these series. I won these in a lot and was only interested in the other coin that was in the lot.
It looks like a similar 1950 50 Francs sold on ebay raw for $199.99 a few weeks ago (here is the sold listinghttps://ebay.com/itm/France-50-francs-1950-Rare-Coin-Nice-Grade-French-/323262680469?hash=item4b43f50d95%3Ag%3AfVIAAOSwqbxaDJuW&nma=true&si=y4Qfs4W4saUD%252BI63SvwOXUlAtm4%253D&orig_cvip=true&rt=nc&_trksid=p2047675.l2557. Does that seem like a reasonable price?
Can someone tell me the difference between "English" reverse and "Indian" obverse on 1920 Australian pennies? Which reverse does this coin have? Can anyone give me an estimated value of this?
Thanks for any info anyone can provide.
Comments
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DPOTD-3
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The French coin certainly is the key date, but too bad it doesn't have much eye appeal. That it's backwards in the holder doesn't help any either. Catalog in Le Franc is between 320-450 Euro, so the $199 price tag on ebay (assuming that's a real sale) seems reasonable.
The 1950 French piece should get $150-$200 retail, IMO... That is a tough piece to get though
Details graded Australian is all over the price as far as value...
Justin Meunier
Boardwalk Numismatics
Thanks @jdmern and @cerberus for the info you provided.
https://coins.ha.com/itm/world-lots/world-lots-trio-of-certified-mixed-issues-total-3-coins-/a/231823-61319.s
Above is the lot I won 2/3 of the coins in. I think others were confused/indifferent to this lot since the lot went for less than $100 with juice. The coin I was going after was the Cuba 1932 20 Centavo which is worth the price of the whole lot even though I didn't know what the other coins were. I still don't know if the 1920 Australia 1 penny is actually a key date or not...
Good deal for sure on that lot!
Justin Meunier
Boardwalk Numismatics
You probably know about this site, but I use it for indications.
https://www.ngccoin.com/price-guide/world/
Thanks TopStuff, yes I'm very familiar with the NGC site. Numista has some helpful info, but again there are tons of different varieties for this 1920 penny and some are worth a lot and others aren't. I brought it to my LCS owner and when I showed it to him, he said hell no...it would take him an hour to figure it out. lol
Bump. Anyone else able to help ID the reverse of this Australia 1920 1 Penny and give an estimated value? If not, I'll let this thread die and will try to find another place to post it in. Thanks in advance.
1920 one penny, obverse is the side with George V, reverse has the date.
India obverse: right upright of N is centered under a dentil. (numista does not show 2 obverses for 1920).
http://www.drakesterling.com/coins-for-sale/news-wire/news-wire/indian-and-london-english-penny-obverses
reverse: dot below bottom scroll. You can see this in the photo and on the slab label.
https://en.numista.com/catalogue/pieces1269.html
value? Look at sold listings on ebay.