I personally think the old car market is down from the average right now - except of course - for the televised auctions where everything is greatly inflated. The real market is much more sedate and because of this I'd suggest the following:
1952 Manhattan Low Average High
Two-door Sedan $5,000 $8,000 $12,000
Four-door Sedan $4,000 $7,000 $11,000
Club Coupe $6,000 $8,000 $15,000
I'd deduct $750 for the windshield - they are available from the club and you would also have to buy a new weather seal
and add installation. I'd pick a number you can live with between the $7,000 and $11,000 range. You can always negotiate with
a serious buyer - and remember..... you only get to sell it once !!!!
Hope this helps.....