Seiko Orange Monster SKX781K1 for $450 for sale from a Private Seller on Chrono24
My Eastern Watch Collection: Seiko Prospex Jade Monster Third Generation 200M Automatic SZSC005 (similar to SBDC023, SBDC025, SBDC067, SBDC073, SBDC075 & SZSC003) - The Ultimate Testimony of an Icon, A Review (plus
Seiko Prospex SRPE27 PADI "Monster"
The Ultimate Seiko Monster Collector's Guide – 60CLICKS
REVIEW: Seiko Prospex SRPD25 and SRPD27 "Monster" Automatic Divers