what size is the font?

Very small. Talking millimeters but is legible and does work on any envelopes with return address lines not impeding it from being read with some keen placement of where you apply the stamp.

Can you do Signature stamps?

Not with this type but there are other better products to search. Only option with this one in particular is the choice of color you’d like the print to be.

Would I be able to add a seal?

I’m not sure I understand your question. You certainly can put a seal on the envelope then stamp it. Or if you have a roll/mat of blank seals stamp those. Hope this helps.

What is the actual size of the printed content?

I'm sure there may be a little variation depending on the font you choose and length of the data you include on each line but in my case, the four lines are centered and the printed area is exactly 2" wide by 3/4" high, while the base "frame" of the stamp unit itself is 3" wide by 1-1/8" high. Crisp, clear stamping, and the size is perfect for a return address block.

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Reviews

J**L

Works and looks great!

Quick shipping and just what I ordered. I like the font choice and the ink and stamp quality is just right. Recommended!

2.02.2026

P**.

highly recommended

Great Product

2.02.2026

J**.

Perfect!

Fat shipping, looks great, stamps nicely! Thanks so much!

11.01.2026

F**E

Great product

Works great, came as ordered.

19.12.2025

S**L

Customer Service Redeemed Them

******UPDATE ******* I have changed my review from 1 star to 4 stars. Customer Service contacted me promptly after this review and offered me a refund or replacement. I went with a replacement and my new stamp works great. I didn’t get to use it for Christmas cards as I planned but they did make it right so I would do business with them again. This item is worthless junk! I bought it to do Christmas card return labels. I didn’t get a single good stamp out of it. Even the label that depicts what the stamp is on the actual stamp is smeared. The worst part is, not only is it non-refundable, you cannot even contact the seller through Amazon about the issue. It just says this item cannot be returned. I understand that a customized product cannot generally be returned but this isn’t user error, this is a manufacturing error. I paid for a product and for it to be expedited and I did not get the product I paid for. Buyer Beware!

23.12.2023

M**T

Great tool

Helpful tool when sending cards or letters as it speeds up the process. Thanks to fair price and fast shipping made this a good choice. Longevity ,will decide how good it is .

18.12.2024

☼**☼

GREAT LITTLE UNIT - STAMPS PERFECTLY!

Even though a few other reviewers had some issues they posted, I have only experienced a quality item. The imprint is perfect, straight and clean, and the stamp mechanism itself is the same quality product that I've used for other needs (i.e., notary stamp) for many years. The footprint on this one is smaller and more compact, but I bought this as a return address stamp and the lettering is extremely legible and crisp. I wasn't expecting it to arrive in a 48 pt. format. It's the right size if being used for the right purpose. Very happy!

9.06.2022

L**L

Just what I needed

works well- just what I needed

28.10.2025

ASIN	B07PSP7872
Best Sellers Rank	#26,316 in Office Products ( See Top 100 in Office Products ) #121 in Business Stamps
Customer Reviews	4.5 4.5 out of 5 stars (4,447)
Date First Available	March 14, 2019
Item model number	Fonts4Line-Parent
Manufacturer	904 Custom
Product Dimensions	4 x 3 x 5 inches

Custom 4 Line Address Stamp - 12 Font Options - Self-Inking Address Stamp (4 Line Stamp) Up to 4 Lines of Custom Text | Multiple Ink Color Options (1, Large)

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