Original (authentic) Hamilton 16mm (inside) / 18mm (outside) Stainless Steel Watch Clasp Buckle with Spring Pin
*** IT IS PLEASE VERY IMPORTANT THAT YOU READ THE SHIPPING SECTION FULLY BEFORE FINALIZING YOUR PURCHASE *** A FEW PEOPLE HAVE BECOME CONFUSED.*** THE FREE SHIPPING OPTION IS BY REGULAR ENVELOPE WITHOUT TRACKING *** Thanks.
Fits any watch with leather or fabric strap @ 16-mm (at the attachment point). Is an exact replacement for Hamilton "EFA" ("Engineered for Action") series.  These were similar to the Khaki line but were with titanium cases. You can see photos by google searching "Hamilton EFA". You can use this buckle with the Khaki series or with any Hamilton with the correct sized band or with any watch with that sized band. The "tang" or "tongue" is slightly wider than average, so if you intend to use this with some miscellaneous band, the holes in the band will probably be slightly smaller than the tang on this buckle. It would merely mean that your leather (or synthetic) will have its holes pushed open a slight bit. 
    
We also sell the complete bands in two sizes and a few colors (different listings). These all came off of original Hamilton EFA watches, which we purchased many years ago and they arrived from Hamilton with the wrong colored bands attached. Hamilton sent us new (correct colored) bands and told us to keep the extras. We have been selling these surplus bands for about 20 years since. Now, we are pulling them apart and are selling the buckles and the leather parts separately as well.
 
You get the part as shown in the photo, in a small ziploc.
Free USPS First Class Mail shipping (no tracking) included for domestic delivery. *** PLEASE READ THE FOLLOWING FULLY ***
Ebay allows us to ship without tracking (plain envelop and postage stamp) because the item's value is $20.00 or less.  For the USA, it can take up to 7-days to arrive.  If you don't get it in 7-days after it is marked "shipped", please message us and we will send another one at no charge (USPS "Ground Advantage") with tracking.  We have no way to know if the un-tracked (first) one arrived or not, unless you message us that it did not arrive. Please note that the First Class (un-tracked) letter method will be faster then the "Ground Advantage" method. It will travel through the postal system just like Priority Mail but without tracking. The Ground Advantage parcel may travel by air but typically not, it will travel slower. So its a bit of an awkward system because the Ground Advantage costs more. 

"USPS Ground Advantage" (with delivery tracking) can be selected at check-out (domestic delivery) for an additional $3.00.  USPS Priority Mail with delivery tracking is available for an additional $7.00. 
We usually ship next day and sometimes even same day but ask for up to three business days lead time to dispatch shipment.

For international shipping: First Class mail with tracking costs $20.00.  Can take up to 4 weeks in the mail (to certain places) but normally two weeks in transit.  We are sorry but we have no other available choices.

For international Mail delivery: This will have tracking.  There should be no question where the item is along the route.  If it goes missing, it will show a long delay at one point along the route.  Please allow 7-days for such shipments to become "un-stuck", which means that the tracking resumes, before reporting to us as lost in transit (by messaging). I know this can be confusing but the system is confusing. Sorry.  So in other words, before the item is considered missing it must have lost progress on the tracking for 7 or more days. It could possibly lose tracking progress twice along the way but the longest (and most recent) progress should be stuck beyond 7-days to consider the item actually lost.  In that case, we will simply refund your payment in full. As before, please contact us by messaging.  

Money back if not delighted--within 14-days.  We will even pay for the return shipping (from USA Buyers). For international buyers, they would please pay for return postage. ***Please request an R/A from us by messaging first*** That way, we can send you a prepaid return label addressed to our return center, which is a different address from our shipping center. The return label will always be by USPS Ground Advantage with delivery tracking.  You only would need to drop the item off at your post office and get a receipt from the counter clerk.

Thanks.

NOTE: When the available quantity shows one only, it usually means we only have one available but sometimes it can mean that we only have one which has passed preliminary (fast-track) quality control. Before we ship, we do a second, more extensive quality control and change the battery on every outbound watch.

Also: We do not give feedback to buyers unless they request it through messaging.  Thanks !