diff --git a/contracts/gamma/GammaCards.v3.sol b/contracts/gamma/GammaCards.v3.sol
index 126bb19..83c5a94 100644
--- a/contracts/gamma/GammaCards.v3.sol
+++ b/contracts/gamma/GammaCards.v3.sol
@@ -229,7 +229,13 @@ contract NofGammaCardsV3 is ERC721, ERC721URIStorage, ERC721Burnable, Ownable {
                 
         if (requireOfferValidationInTransfer) {
             bool hasOffer = gammaOffersContract.hasOffer(msg.sender, cardNumber);
-            require (!hasOffer, "This card has an offer, it cannot be transfered.");
+            bool hasMoreThanOne = cardsByUser[msg.sender][cardNumber] > 1;
+            /* 
+            The user can only make an offer for one letter and in that case he cannot mint or transfer it.
+            If you have more than one copy (quantity > 1) of that card, you must be able to mint 
+            or transfer the rest.
+            */
+            require (!hasOffer || hasMoreThanOne, "This card has an offer, it cannot be transfered.");
         }
         
         cardsByUser[msg.sender][cardNumber]--;
@@ -244,6 +250,18 @@ contract NofGammaCardsV3 is ERC721, ERC721URIStorage, ERC721Burnable, Ownable {
             require(cardsByUser[msg.sender][cardNumbers[i]] > 0, "You does not have this card.");
             cardsByUser[msg.sender][cardNumbers[i]]--;
             cardsByUser[to][cardNumbers[i]]++;
+                                
+            if (requireOfferValidationInTransfer) {
+                bool hasOffer = gammaOffersContract.hasOffer(msg.sender, cardNumbers[i]);
+                bool hasMoreThanOne = cardsByUser[msg.sender][cardNumbers[i]] > 1;
+                /* 
+                The user can only make an offer for one letter and in that case he cannot mint or transfer it.
+                If you have more than one copy (quantity > 1) of that card, you must be able to mint 
+                or transfer the rest.
+                */
+                require (!hasOffer || hasMoreThanOne, "This card has an offer, it cannot be transfered.");
+            }
+            
         }
     }
 
@@ -310,7 +328,13 @@ contract NofGammaCardsV3 is ERC721, ERC721URIStorage, ERC721Burnable, Ownable {
         
         if (requireOfferValidationInMint) {
             bool hasOffer = gammaOffersContract.hasOffer(msg.sender, cardNum);
-            require (!hasOffer, "This card has an offer, it cannot be minted.");
+            bool hasMoreThanOne = cardsByUser[msg.sender][cardNum] > 1;
+            /* 
+            The user can only make an offer for one letter and in that case he cannot mint or transfer it.
+            If you have more than one copy (quantity > 1) of that card, you must be able to mint 
+            or transfer the rest.
+            */
+            require (!hasOffer || hasMoreThanOne, "This card has an offer, it cannot be minted.");
         }
         
         cardsByUser[msg.sender][cardNum]--;
@@ -357,6 +381,10 @@ contract NofGammaCardsV3 is ERC721, ERC721URIStorage, ERC721Burnable, Ownable {
         return cardsByUser[msg.sender][cardNum] > 0;
     }
      
+    function getCardQuantityByUser(address user, uint8 cardNum) public view returns (uint8) {
+        return cardsByUser[user][cardNum];
+    }
+
     function getCardsByUser(address user) public view returns (uint8[] memory, uint8[] memory, bool[] memory) {
         uint8[] memory cardNumbers = new uint8[](121);
         uint8[] memory quantities = new uint8[](121);
diff --git a/test/gamma.cards.test.ts b/test/gamma.cards.test.ts
index e8a8a11..ba63d8d 100644
--- a/test/gamma.cards.test.ts
+++ b/test/gamma.cards.test.ts
@@ -102,6 +102,26 @@ describe('NoF - Gamma Cards Tests', function () {
     await gammaCards.mintCard(getCardsByUserResult[0][0]);
   });
 
+  it('should allow to mint a card when has an offer, qantity > 1 and flag requireOfferValidationInMint is true', async () => {
+    const { gammaPacks, gammaCards, gammaOffers, address0 } = await loadFixture(deployNofFixture)
+    const getCardsByUserResult1: getCardsByUserType = await getOnePackData(gammaPacks, gammaCards, address0)
+    // another pack with the same cards.
+    await getOnePackData(gammaPacks, gammaCards, address0)
+
+    const cardNumber = getCardsByUserResult1[0][0];
+    let quantity = await gammaCards.getCardQuantityByUser(address0.address, cardNumber);
+    await expect(quantity).to.be.equal(2);
+
+    await gammaOffers.createOffer(cardNumber, [1,2,24,4,5,6,7,8])
+    let offers = await gammaOffers.getOffers();
+    await expect(offers.length).to.not.be.equal(0);
+
+    await gammaCards.changeRequireOfferValidationInMint(true);
+    await gammaCards.mintCard(cardNumber);
+    quantity = await gammaCards.getCardQuantityByUser(address0.address, cardNumber);
+    await expect(quantity).to.be.equal(1);
+  });
+
   it('should not allow to transfer a card when has an offer and flag requireOfferValidationInTransfer is true', async () => {
     const { gammaPacks, gammaCards, gammaOffers, address0, address1 } = await loadFixture(deployNofFixture)
     const getCardsByUserResult: getCardsByUserType = await getOnePackData(gammaPacks, gammaCards, address0)
@@ -117,12 +137,11 @@ describe('NoF - Gamma Cards Tests', function () {
     ).to.be.revertedWith('This card has an offer, it cannot be transfered.')
   });
 
-  it('should allow to mint a card when has an offer and flag requireOfferValidationInTransfer is false', async () => {
+  it('should allow to transfer a card when has an offer and flag requireOfferValidationInTransfer is false', async () => {
     const { gammaPacks, gammaCards, gammaOffers, address0, address1 } = await loadFixture(deployNofFixture)
     const getCardsByUserResult: getCardsByUserType = await getOnePackData(gammaPacks, gammaCards, address0)
     
     await gammaOffers.createOffer(getCardsByUserResult[0][0], [1,2,24,4,5,6,7,8])
-    
     let offers = await gammaOffers.getOffers();
     await expect(offers.length).to.not.be.equal(0);
 
@@ -130,5 +149,42 @@ describe('NoF - Gamma Cards Tests', function () {
     await gammaCards.transferCard(address1.address, getCardsByUserResult[0][0]);
   });
 
+  it('should allow to transfer a card when has an offer, qantity > 1 and flag requireOfferValidationInTransfer is true', async () => {
+    const { gammaPacks, gammaCards, gammaOffers, address0, address1 } = await loadFixture(deployNofFixture)
+    const getCardsByUserResult1: getCardsByUserType = await getOnePackData(gammaPacks, gammaCards, address0)
+    // another pack with the same cards.
+    await getOnePackData(gammaPacks, gammaCards, address0)
+
+    const cardNumber = getCardsByUserResult1[0][0];
+    let quantity = await gammaCards.getCardQuantityByUser(address0.address, cardNumber);
+    await expect(quantity).to.be.equal(2);
+
+    await gammaOffers.createOffer(cardNumber, [1,2,24,4,5,6,7,8])
+    let offers = await gammaOffers.getOffers();
+    await expect(offers.length).to.not.be.equal(0);
+
+    await gammaCards.changeRequireOfferValidationInTransfer(true);
+    await gammaCards.transferCard(address1.address, cardNumber);
+    quantity = await gammaCards.getCardQuantityByUser(address0.address, cardNumber);
+    await expect(quantity).to.be.equal(1);
+  });
+
+  it('should allow to transfer several cards', async () => {
+    const { gammaPacks, gammaCards, gammaOffers, address0, address1 } = await loadFixture(deployNofFixture)
+    const getCardsByUserResult1: getCardsByUserType = await getOnePackData(gammaPacks, gammaCards, address0)
+  
+    const cardNumber1 = getCardsByUserResult1[0][0];
+    const cardNumber2 = getCardsByUserResult1[0][1];
+    const cardNumber3 = getCardsByUserResult1[0][2];
+    const cards = [cardNumber1, cardNumber2, cardNumber3];
+
+    await gammaCards.transferCards(address1.address, cards);
+    const quantity1 = await gammaCards.getCardQuantityByUser(address0.address, cardNumber1);
+    const quantity2 = await gammaCards.getCardQuantityByUser(address0.address, cardNumber2);
+    const quantity3 = await gammaCards.getCardQuantityByUser(address0.address, cardNumber3);
+    await expect(quantity1).to.be.equal(0);
+    await expect(quantity2).to.be.equal(0);
+    await expect(quantity3).to.be.equal(0);
+  });
 
 })