Hi Allan,

Thank you for contacting Mearto with your appraisal inquiry.
The 1987 Detroit Tigers were a standout team in Major League Baseball, finishing first in the American League East with a 98-64 record. Managed by Sparky Anderson, the team featured key players like Alan Trammell, who had an MVP-caliber season, and Jack Morris, their ace pitcher. Known for their resilience, the Tigers battled their way to the ALCS but ultimately lost to the Minnesota Twins, falling short of a World Series appearance.
There have been few team-signed collectibles that have come to market from any year and those that have - largely baseballs, bats and the occasional team photo; once you narrow it down by year, the number of findable records shrinks to just baseballs, all for less than $500.
I haven't found this version of the 1987 Miller Detroit Tigers calendar but examples - other clubs, other years - can be purchased for less than $100.
Combining all of these elements, this calendar would appear to be worth $400-600
Based on the photos and information provided, and subject to examination, this is:

A vintage 1987 Detroit Tigers Miller Annual Calendar
signed to the reverse by Sid Abel, sparky Anderson, Ernie Banks, Lem Barney, Jim Brown, Dick Butkus, Lou Creekmur, Mike Ditka, Rick Ferrlll, Otto Graham, Lou "The Toe" Groza, Franco Harris, Leon Hart, Paul Hornung, Sam Huff, Deacon Jones, Bernie Kosar, Jack Lambert, Dick "Night Train" Lane, Bob Lanier, Yale Lary, Ray Nitschke, Walter Payton, Frank Robinson, Gale Sayers, Joe Schmidt, Bart Starr, Fran Tarkenton, Y.A. Tittle and Doak Walker; one signature unidentified.
30 by 20 inches
CONDITION: This calendar appears to be in good condition
PROVENANCE: Acquired at a second-hand store
$ 400-600*
*represents a fair-market value for auction purposes; retail or asking price may vary.

Please let us know if you have additional items to appraise, or questions/concerns, and thank you again for using Mearto.
~ Delia