Simple Update command -> ERROR 1054 (42S22): Unknown column 'Value' in 'NEW'

[Jim Robins]

I have a coins table -
+-----------------+---------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+-----------------+---------------+------+-----+---------+----------------+
| id | int | NO | PRI | NULL | auto_increment |
| Denomination_Id | int | NO | MUL | NULL | |
| Year | int | NO | | NULL | |
| Country_Id | int | NO | MUL | NULL | |
| Grade_Id | int | NO | MUL | NULL | |
| Mint | varchar(15) | YES | MUL | NULL | |
| PurchaseDate | datetime | YES | | NULL | |
| Obversa | varchar(25) | YES | | NULL | |
| Reverse | varchar(25) | YES | | NULL | |
| Comments | varchar(25) | YES | | NULL | |
| Price | double(6,2) | YES | | NULL | |
| Qty | int | YES | | 0 | |
| CoinTotal | decimal(10,2) | YES | | NULL | |
| Catalog | varchar(15) | YES | | NULL | |
+-----------------+---------------+------+-----+---------+----------------+

I cannot update it
update coins set Denomination_Id = 14 where Denomination_Id = 384;
ERROR 1054 (42S22): Unknown column 'Value' in 'NEW'

What am I missing???