It looks like there were 2 GBSCC sets issued. One in 2005 and one in 2006. Here are the checklists for each set along with eBay links:
2005 Greater Boston Sports Collectors Club GBSCC Boston Sport Kings Red Sox Set:
https://www.ebay.com/itm/362602065666?hash=item546cc46f02:g:qfsAAOSwOKlcn~sN
#1 Carl Yastrzemski
#2 Jim Rice
#3 Dwight Evans
#3 Cecil Cooper
#5 Luis Aparicio
#6 Johnny Pesky
#7 Rick Miller
#8 Dave Roberts
Note: That is not a typo; there are actually two #3 cards and no #4.
2006 Greater Boston Sports Collectors Club GBSCC Boston Sport Kings Set:
https://www.ebay.com/itm/363255367166?hash=item5493b505fe:g:oEMAAOSwxoJcWl0G
#1 Dick Radatz, Red Sox ~ #2 Jim Lonborg, Red Sox ~ #3 Bill Carvahlo, GBSCC ~ #4 Bobby Doerr, Red Sox ~ #5 Eddie Mathews, Boston Braves ~ #6 Frank Malzone, Red Sox ~ #7 Bill Russell, Boston Celtics ~ #8 Milt Schmidt, Boston Bruins ~ #9 Gino Cappelletti, Boston Patriots ~ #10 Lou Boudreau, Red Sox ~ #11 Walt Dropo, Red Sox ~ #12 Ted Lepcio, Red Sox ~ #13 Sibby Sisti, Braves ~ #14 Jim Gebo, GBSSS ~ #15 Carlton Fisk, Red Sox ~ #16 Johnny Sain, Braves ~ #17 Jo Jo White, Celtics ~ #18 George Kell, Red Sox ~ #19 Brad Park, Bruins ~ #20 Peter D'Amico, GBSCC ~ #21 Gerry Cheevers, Bruins ~ #22 Tony Perez , Red Sox ~ #23 John Smith, New England Patriots ~ #24 Ed Sandford, Bruins ~ #25 Fred Lynn, Red Sox ~ #26 Luis Tiant, Red Sox ~ #27 Darrell Brandon, Red Sox ~ #28 Chuck Schilling, Red Sox ~ #29 Sam Jones, Celtics ~ #30 Jeff Oxman, GBSCC ~ #31 Rick Ferrell, Red Sox ~ #32 Gene Conley, Braves, Red Sox & Celtics ~ #33 Dave Cowens, Celtics ~ #34 John Wyatt, Red Sox ~ #35 Barry Pederson, Bruins ~ #36 Ken Harrelson, Red Sox ~ #37 Billy Conigliaro, Red Sox ~ #38 Warren Spahn, Braves ~ #39 Johnny Logan, Braves ~ #40 Roger Morrison, GBSCC ~ #41 Eddie Pellagrini, Red Sox ~ #42 Bernie Carbo, Red Sox ~ #43 Rico Petrocelli, Red Sox ~ #44 Gord Kluzak, Bruins ~ #45 Bill Monbouquette, Red Sox ~ #46 Bob Stanley, Red Sox ~ #47 Ike DeLock, Red Sox ~ #48 Tom Yewcic, Patriots ~ #49 Bill "Spaceman" Lee ~ #50 Warren Saxton, GBSCC ~ #51 Dick Donovan, Braves ~ #52 Elbie Fletcher, Braves ~ #53 Fergie Jenkins, Red Sox ~ #54 Mickey Vernon, Red Sox ~ #55 John Kennedy, Red Sox ~ #56 Ken Hodge, Bruins ~ #57 Butch Hobson, Red Sox ~ #58 Bob Sweeney, Bruins ~ #59 Bob Montgomery, Red Sox ~ #60 Ace Bailey, Bruins ~ #61 Dalton Jones, Red Sox ~ #62 Gary Doak, Bruins ~ #63 Gary Peters, Red Sox ~ #64 Norm Siebern ~ #65 Wilbur Wood ~ #66 Gary Bell ~ #67 Fern Flaman, Bruins ~ #68 Gerry Moses, Red Sox ~ #69 Rick Middleton, Bruins ~ #70 Mel Parnell, Red Sox ~ #71 Don Schwall ~ #72 Juan Marichal ~ #73 Sam Jethroe ~ #74 John McKenzie, Bruins ~ #75 Sonny Siebert, Red Sox ~ #76 Milt Morin, UMass & Cleveland Browns ~ #77 Lyndon Byers, Bruins ~ #78 Ken Ryan, Red Sox ~ #79 Tommy Holmes, Braves