This appears to be a vintage pewter mug featuring engraved text related to the "O.U.R.V.C." and "FIELD FIRING 1888". The engraving lists multiple names, starting with "Sergt. A.A. McIlwaine". The vessel is made of pewter and shows signs of aging or patina
  THIS ITEM IS AS PICTURED WITH NO FURTHER ATTACHMENTS. ALL SALES ARE FINAL. PLEASE REFER TO THE AUCTION DESCRIPTION, LOT #1 DESCRIPTION AND TERMS OF SALE BEFORE BIDDING.     UNTIL FURTHER NOTICE, NO SALES TO COLORADO WILL BE ALLOWED     GOOD LUCK BIDDING, WE HOPE YOU FIND THE ITEM YOU ARE LOOKING FOR!

• Condition: Good