Rob, First of all Welcome, I think you were in range on this one. I looks like a class 4 car at the moment. Most insurance, auction houses & the like will refer to a condition guide to determine value. Hagerty has an excellent on line tool you can use.
I have been watching the trends for a class 1... Europas in the states now go around 32k...Overseas it about 38k. The interesting thing that since 2001 a class 1 has risen in value almost 11k...or about 1k every year and its not stopping!
1 Concours- Running perfect example, original or close to stock, excellent mechanicals, paint & trim no visible flaws. 25-32k
2 Excellent- Running, well kept overall, original or little modifications(except for safety),paint and trim few minor flaws 15-18k
3 Good-Running, Repairs needed to bring to condition # 2. Paint, body & trim have visible flaws. 10-12k
4 Fair- Running / Any repairs required for safe operation and overall appearance condition & will pass inspection 6-8 k
5 Poor-Not running / Repairs or full restoration needed, paint and trim distressed, parts missing 2-5k
Note add 10 % if it's a true JPS, Specials also get 10% if you have the 365-5 speed box.
6-Basket case-It has a tree growing through it,some boxes found,you forgot a shovel to get to it, parts car...priceless!
Good luck with her!....
ps, Don't look at the receipts until after your first test drive.You"ll know it was well worth the time, effort and money.