These wonderful, silver, dumb bell Cufflinks are genuine Antiques - NOT a reproduction.They boast fabulous, silver workmanship and attention to detail.They are hallmarked.They weigh 15.5 grams.In very good condition they look stunning when worn.The dumb bells measure 17mm across and 6mm down - that's just under 3/4 of an inch by approximately 1/4 of an inch.The backs are 16mm across and 3mm down - that's just less than 3/4 of an inch by approximately 1/8 of an inch.The connecting bars are 15mm - just over 1/2 an inch.