@73Gold — thank you for posting the tag. The mymopar.com decoder that I like to use to save time is down at the moment, but here goes from memory:
CS: Chrysler NYer Brougham
23: 2 Door Hardtop
T: 440 4BBL 8 CYL
3: 1973 (model year)
C: Jefferson Avenue, MI, USA (plant)
166805: Sequence number
E85: 440 cid 4 barrel V8
D34: Automatic Transmission
JY6: Gold Poly Exterior Color
G6Y4: Interior Trim - Vinyl buckets, Gold
000: Full Door Panels
B16: Scheduled Build Date: Nov. 16, 1972
197199: Order number
V1W: White Vinyl Top
H51: Air Conditioning with Heater
R13: Deluxe AM Radio (5 1/2 Watts)
L31: Hood/Fender Mounted Turn Signals
G11: Tinted Windows (All)
M45: Fender Skirts
P31: Power Windows
Your car’s SBD is exactly two years later than my ‘71 Monaco.